微积分学示例

$f (x) = (- 4 x^{\frac{1}{2}} - \frac{4}{x^{\frac{2}{3}}}) (5 x^{\frac{2}{3}} - 1)$

解题步骤 1

考虑差商公式。

$\frac{f (x + h) - f (x)}{h}$

解题步骤 2

求定义的补集。

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解题步骤 2.1

计算函数在 $x = x + h$ 处的值。

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解题步骤 2.1.1

使用表达式中的 $x + h$ 替换变量 $x$ 。

$f (x + h) = (- 4 {(x + h)}^{\frac{1}{2}} - \frac{4}{{(x + h)}^{\frac{2}{3}}}) (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2

化简结果。

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解题步骤 2.1.2.1

要将 $- 4 {(x + h)}^{\frac{1}{2}}$ 写成带有公分母的分数，请乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$f (x + h) = (- 4 {(x + h)}^{\frac{1}{2}} \cdot \frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} - \frac{4}{{(x + h)}^{\frac{2}{3}}}) (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.2

化简项。

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解题步骤 2.1.2.2.1

组合 $- 4 {(x + h)}^{\frac{1}{2}}$ 和 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$f (x + h) = (\frac{- 4 {(x + h)}^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} - \frac{4}{{(x + h)}^{\frac{2}{3}}}) (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.2.2

在公分母上合并分子。

$f (x + h) = \frac{- 4 {(x + h)}^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} - 4}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3

化简分子。

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解题步骤 2.1.2.3.1

从 $- 4 {(x + h)}^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} - 4$ 中分解出因数 $- 4$ 。

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解题步骤 2.1.2.3.1.1

将表达式重新排序。

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解题步骤 2.1.2.3.1.1.1

将 $x$ 和 $h$ 重新排序。

$f (x + h) = \frac{- 4 {(h + x)}^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} - 4}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.1.1.2

将 $x$ 和 $h$ 重新排序。

$f (x + h) = \frac{- 4 {(h + x)}^{\frac{1}{2}} {(h + x)}^{\frac{2}{3}} - 4}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.1.2

从 $- 4 {(h + x)}^{\frac{1}{2}} {(h + x)}^{\frac{2}{3}}$ 中分解出因数 $- 4$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{1}{2}} {(h + x)}^{\frac{2}{3}}) - 4}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.1.3

从 $- 4$ 中分解出因数 $- 4$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{1}{2}} {(h + x)}^{\frac{2}{3}}) - 4 \cdot 1}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.1.4

从 $- 4 ({(h + x)}^{\frac{1}{2}} {(h + x)}^{\frac{2}{3}}) - 4 (1)$ 中分解出因数 $- 4$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{1}{2}} {(h + x)}^{\frac{2}{3}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2

通过指数相加将 ${(h + x)}^{\frac{1}{2}}$ 乘以 ${(h + x)}^{\frac{2}{3}}$ 。

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解题步骤 2.1.2.3.2.1

使用幂法则 $a^{m} a^{n} = a^{m + n}$ 合并指数。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{1}{2} + \frac{2}{3}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.2

要将 $\frac{1}{2}$ 写成带有公分母的分数，请乘以 $\frac{3}{3}$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{1}{2} \cdot \frac{3}{3} + \frac{2}{3}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.3

要将 $\frac{2}{3}$ 写成带有公分母的分数，请乘以 $\frac{2}{2}$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{1}{2} \cdot \frac{3}{3} + \frac{2}{3} \cdot \frac{2}{2}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.4

通过与 $1$ 的合适因数相乘，将每一个表达式写成具有公分母 $6$ 的形式。

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解题步骤 2.1.2.3.2.4.1

将 $\frac{1}{2}$ 乘以 $\frac{3}{3}$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{3}{2 \cdot 3} + \frac{2}{3} \cdot \frac{2}{2}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.4.2

将 $2$ 乘以 $3$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{3}{6} + \frac{2}{3} \cdot \frac{2}{2}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.4.3

将 $\frac{2}{3}$ 乘以 $\frac{2}{2}$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{3}{6} + \frac{2 \cdot 2}{3 \cdot 2}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.4.4

将 $3$ 乘以 $2$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{3}{6} + \frac{2 \cdot 2}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.5

在公分母上合并分子。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{3 + 2 \cdot 2}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.6

化简分子。

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解题步骤 2.1.2.3.2.6.1

将 $2$ 乘以 $2$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{3 + 4}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.3.2.6.2

将 $3$ 和 $4$ 相加。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.4

化简项。

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解题步骤 2.1.2.4.1

将负号移到分数的前面。

$f (x + h) = - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}} - 1)$

解题步骤 2.1.2.4.2

运用分配律。

$f (x + h) = - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}}) - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot - 1$

解题步骤 2.1.2.4.3

约去 ${(x + h)}^{\frac{2}{3}}$ 的公因数。

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解题步骤 2.1.2.4.3.1

将 $- \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}}$ 中前置负号移到分子中。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot (5 {(x + h)}^{\frac{2}{3}}) - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot - 1$

解题步骤 2.1.2.4.3.2

从 $5 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 ${(x + h)}^{\frac{2}{3}}$ 。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot ({(x + h)}^{\frac{2}{3}} \cdot 5) - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot - 1$

解题步骤 2.1.2.4.3.3

约去公因数。

$f (x + h) = \frac{- 4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot ({(x + h)}^{\frac{2}{3}} \cdot 5) - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot - 1$

解题步骤 2.1.2.4.3.4

重写表达式。

$f (x + h) = - 4 ({(h + x)}^{\frac{7}{6}} + 1) \cdot 5 - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot - 1$

解题步骤 2.1.2.4.4

将 $5$ 乘以 $- 4$ 。

$f (x + h) = - 20 ({(h + x)}^{\frac{7}{6}} + 1) - \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot - 1$

解题步骤 2.1.2.5

乘以 $- \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} \cdot - 1$ 。

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解题步骤 2.1.2.5.1

将 $- 1$ 乘以 $- 1$ 。

$f (x + h) = - 20 ({(h + x)}^{\frac{7}{6}} + 1) + 1 (\frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}})$

解题步骤 2.1.2.5.2

将 $\frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}}$ 乘以 $1$ 。

$f (x + h) = - 20 ({(h + x)}^{\frac{7}{6}} + 1) + \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.6

化简每一项。

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解题步骤 2.1.2.6.1

运用分配律。

$f (x + h) = - 20 {(h + x)}^{\frac{7}{6}} - 20 \cdot 1 + \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.6.2

将 $- 20$ 乘以 $1$ 。

$f (x + h) = - 20 {(h + x)}^{\frac{7}{6}} - 20 + \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.7

要将 $- 20 {(h + x)}^{\frac{7}{6}}$ 写成带有公分母的分数，请乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$f (x + h) = - 20 {(h + x)}^{\frac{7}{6}} \cdot \frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} + \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.8

化简项。

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解题步骤 2.1.2.8.1

组合 $- 20 {(h + x)}^{\frac{7}{6}}$ 和 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$f (x + h) = \frac{- 20 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} + \frac{4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.8.2

在公分母上合并分子。

$f (x + h) = \frac{- 20 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + 4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9

化简分子。

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解题步骤 2.1.2.9.1

从 $- 20 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + 4 ({(h + x)}^{\frac{7}{6}} + 1)$ 中分解出因数 $4$ 。

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解题步骤 2.1.2.9.1.1

从 $- 20 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) + 4 ({(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.1.2

从 $4 (- 5 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) + 4 ({(h + x)}^{\frac{7}{6}} + 1)$ 中分解出因数 $4$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2

乘以 $- 5 {(h + x)}^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}$ 。

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解题步骤 2.1.2.9.2.1

重新排序项。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{7}{6}} {(h + x)}^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2

通过指数相加将 ${(h + x)}^{\frac{7}{6}}$ 乘以 ${(h + x)}^{\frac{2}{3}}$ 。

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解题步骤 2.1.2.9.2.2.1

移动 ${(h + x)}^{\frac{2}{3}}$ 。

$f (x + h) = \frac{4 (- 5 ({(h + x)}^{\frac{2}{3}} {(h + x)}^{\frac{7}{6}}) + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2.2

使用幂法则 $a^{m} a^{n} = a^{m + n}$ 合并指数。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{2}{3} + \frac{7}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2.3

要将 $\frac{2}{3}$ 写成带有公分母的分数，请乘以 $\frac{2}{2}$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{2}{3} \cdot \frac{2}{2} + \frac{7}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2.4

通过与 $1$ 的合适因数相乘，将每一个表达式写成具有公分母 $6$ 的形式。

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解题步骤 2.1.2.9.2.2.4.1

将 $\frac{2}{3}$ 乘以 $\frac{2}{2}$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{2 \cdot 2}{3 \cdot 2} + \frac{7}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2.4.2

将 $3$ 乘以 $2$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{2 \cdot 2}{6} + \frac{7}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2.5

在公分母上合并分子。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{2 \cdot 2 + 7}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2.6

化简分子。

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解题步骤 2.1.2.9.2.2.6.1

将 $2$ 乘以 $2$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{4 + 7}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.9.2.2.6.2

将 $4$ 和 $7$ 相加。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20$

解题步骤 2.1.2.10

要将 $- 20$ 写成带有公分母的分数，请乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} - 20 \cdot \frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.11

组合 $- 20$ 和 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1)}{{(x + h)}^{\frac{2}{3}}} + \frac{- 20 {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.12

在公分母上合并分子。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1) - 20 {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.13

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1) - 20 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

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解题步骤 2.1.2.13.1

从 $- 20 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1) + 4 (- 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.13.2

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1) + 4 (- 5 {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $4$ 。

$f (x + h) = \frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.14

从 $- 5 {(h + x)}^{\frac{11}{6}}$ 中分解出因数 $- 1$ 。

$f (x + h) = \frac{4 (- (5 {(h + x)}^{\frac{11}{6}}) + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.15

从 ${(h + x)}^{\frac{7}{6}}$ 中分解出因数 $- 1$ 。

$f (x + h) = \frac{4 (- (5 {(h + x)}^{\frac{11}{6}}) - 1 (- {(h + x)}^{\frac{7}{6}}) + 1 - 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.16

从 $- (5 {(h + x)}^{\frac{11}{6}}) - 1 (- {(h + x)}^{\frac{7}{6}})$ 中分解出因数 $- 1$ 。

$f (x + h) = \frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}}) + 1 - 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.17

将 $1$ 重写为 $- 1 (- 1)$ 。

$f (x + h) = \frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}}) - 1 \cdot - 1 - 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.18

从 $- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}}) - 1 (- 1)$ 中分解出因数 $- 1$ 。

$f (x + h) = \frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1) - 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.19

从 $- 5 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $- 1$ 。

$f (x + h) = \frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1) - (5 {(x + h)}^{\frac{2}{3}}))}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.20

从 $- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1) - (5 {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $- 1$ 。

$f (x + h) = \frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}}))}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.21

化简表达式。

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解题步骤 2.1.2.21.1

将 $- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})$ 重写为 $- 1 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})$ 。

$f (x + h) = \frac{4 (- 1 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}}))}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.21.2

将负号移到分数的前面。

$f (x + h) = - \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.1.2.22

最终答案为 $- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$ 。

$- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

解题步骤 2.2

求定义的补集。

$f (x + h) = - \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

$f (x) = - 20 x^{\frac{7}{6}} + 4 x^{\frac{1}{2}} - 20 + \frac{4}{x^{\frac{2}{3}}}$

$f (x + h) = - \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$

$f (x) = - 20 x^{\frac{7}{6}} + 4 x^{\frac{1}{2}} - 20 + \frac{4}{x^{\frac{2}{3}}}$

解题步骤 3

插入分量。

$\frac{f (x + h) - f (x)}{h} = \frac{- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - (- 20 x^{\frac{7}{6}} + 4 x^{\frac{1}{2}} - 20 + \frac{4}{x^{\frac{2}{3}}})}{h}$

解题步骤 4

化简。

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解题步骤 4.1

化简分子。

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解题步骤 4.1.1

运用分配律。

$\frac{- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - (- 20 x^{\frac{7}{6}}) - (4 x^{\frac{1}{2}}) - - 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.2

化简。

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解题步骤 4.1.2.1

将 $- 20$ 乘以 $- 1$ 。

$\frac{- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} + 20 x^{\frac{7}{6}} - (4 x^{\frac{1}{2}}) - - 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.2.2

将 $4$ 乘以 $- 1$ 。

$\frac{- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} + 20 x^{\frac{7}{6}} - 4 x^{\frac{1}{2}} - - 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.2.3

将 $- 1$ 乘以 $- 20$ 。

$\frac{- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} + 20 x^{\frac{7}{6}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.3

要将 $20 x^{\frac{7}{6}}$ 写成带有公分母的分数，请乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$\frac{- \frac{4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} + \frac{20 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.4

在公分母上合并分子。

$\frac{\frac{- 4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}}) + 20 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5

化简分子。

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解题步骤 4.1.5.1

从 $- 4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}}) + 20 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

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解题步骤 4.1.5.1.1

从 $- 4 (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $4$ 。

$\frac{\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})) + 20 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.1.2

从 $20 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

$\frac{\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})) + 4 (5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.1.3

从 $4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}})) + 4 (5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $4$ 。

$\frac{\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} - {(h + x)}^{\frac{7}{6}} - 1 + 5 {(x + h)}^{\frac{2}{3}}) + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.2

运用分配律。

$\frac{\frac{4 (- (5 {(h + x)}^{\frac{11}{6}}) - - {(h + x)}^{\frac{7}{6}} - - 1 - (5 {(x + h)}^{\frac{2}{3}}) + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.3

化简。

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解题步骤 4.1.5.3.1

将 $5$ 乘以 $- 1$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} - - {(h + x)}^{\frac{7}{6}} - - 1 - (5 {(x + h)}^{\frac{2}{3}}) + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.3.2

乘以 $- - {(h + x)}^{\frac{7}{6}}$ 。

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解题步骤 4.1.5.3.2.1

将 $- 1$ 乘以 $- 1$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + 1 {(h + x)}^{\frac{7}{6}} - - 1 - (5 {(x + h)}^{\frac{2}{3}}) + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.3.2.2

将 ${(h + x)}^{\frac{7}{6}}$ 乘以 $1$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} - - 1 - (5 {(x + h)}^{\frac{2}{3}}) + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.3.3

将 $- 1$ 乘以 $- 1$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - (5 {(x + h)}^{\frac{2}{3}}) + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.5.3.4

将 $5$ 乘以 $- 1$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - 4 x^{\frac{1}{2}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.6

要将 $- 4 x^{\frac{1}{2}}$ 写成带有公分母的分数，请乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

解题步骤 4.1.7

组合 $- 4 x^{\frac{1}{2}}$ 和 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} + \frac{- 4 x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.8

在公分母上合并分子。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) - 4 x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.9

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) - 4 x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

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解题步骤 4.1.9.1

从 $- 4 x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) + 4 (- x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.9.2

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) + 4 (- x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $4$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} + 20 - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.10

要将 $20$ 写成带有公分母的分数，请乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

解题步骤 4.1.11

在公分母上合并分子。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) + 20 {(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}} - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.12

化简分子。

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解题步骤 4.1.12.1

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) + 20 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

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解题步骤 4.1.12.1.1

从 $20 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) + 4 (5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.12.1.2

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) + 4 (5 {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $4$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 - 5 {(x + h)}^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} + 5 {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.12.2

将 $- 5 {(x + h)}^{\frac{2}{3}}$ 和 $5 {(x + h)}^{\frac{2}{3}}$ 相加。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} + 0)}{{(x + h)}^{\frac{2}{3}}} - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.12.3

将 $- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}$ 和 $0$ 相加。

解题步骤 4.1.13

要将 $\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$ 写成带有公分母的分数，请乘以 $\frac{x^{\frac{2}{3}}}{x^{\frac{2}{3}}}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}} \cdot \frac{x^{\frac{2}{3}}}{x^{\frac{2}{3}}} - \frac{4}{x^{\frac{2}{3}}}}{h}$

解题步骤 4.1.14

要将 $- \frac{4}{x^{\frac{2}{3}}}$ 写成带有公分母的分数，请乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

解题步骤 4.1.15

通过与 $1$ 的合适因数相乘，将每一个表达式写成具有公分母 ${(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}}$ 的形式。

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解题步骤 4.1.15.1

将 $\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}})}{{(x + h)}^{\frac{2}{3}}}$ 乘以 $\frac{x^{\frac{2}{3}}}{x^{\frac{2}{3}}}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}}} - \frac{4}{x^{\frac{2}{3}}} \cdot \frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.15.2

将 $\frac{4}{x^{\frac{2}{3}}}$ 乘以 $\frac{{(x + h)}^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}}}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}}}{{(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}}} - \frac{4 {(x + h)}^{\frac{2}{3}}}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.15.3

重新排序 ${(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}}$ 的因式。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}}}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}} - \frac{4 {(x + h)}^{\frac{2}{3}}}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.16

在公分母上合并分子。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}} - 4 {(x + h)}^{\frac{2}{3}}}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17

化简分子。

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解题步骤 4.1.17.1

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}} - 4 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

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解题步骤 4.1.17.1.1

从 $4 (- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}}$ 中分解出因数 $4$ 。

$\frac{\frac{4 ((- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}}) - 4 {(x + h)}^{\frac{2}{3}}}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.1.2

从 $- 4 {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $4$ 。

$\frac{\frac{4 ((- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}}) + 4 (- {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.1.3

从 $4 ((- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}}) + 4 (- {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $4$ 。

$\frac{\frac{4 ((- 5 {(h + x)}^{\frac{11}{6}} + {(h + x)}^{\frac{7}{6}} + 1 + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}}) x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.2

运用分配律。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + 1 x^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3

化简。

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解题步骤 4.1.17.3.1

将 $x^{\frac{2}{3}}$ 乘以 $1$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2

通过指数相加将 $x^{\frac{7}{6}}$ 乘以 $x^{\frac{2}{3}}$ 。

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解题步骤 4.1.17.3.2.1

移动 $x^{\frac{2}{3}}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 (x^{\frac{2}{3}} x^{\frac{7}{6}}) {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2.2

使用幂法则 $a^{m} a^{n} = a^{m + n}$ 合并指数。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{2}{3} + \frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2.3

要将 $\frac{2}{3}$ 写成带有公分母的分数，请乘以 $\frac{2}{2}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{2}{3} \cdot \frac{2}{2} + \frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2.4

通过与 $1$ 的合适因数相乘，将每一个表达式写成具有公分母 $6$ 的形式。

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解题步骤 4.1.17.3.2.4.1

将 $\frac{2}{3}$ 乘以 $\frac{2}{2}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{2 \cdot 2}{3 \cdot 2} + \frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2.4.2

将 $3$ 乘以 $2$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{2 \cdot 2}{6} + \frac{7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2.5

在公分母上合并分子。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{2 \cdot 2 + 7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2.6

化简分子。

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解题步骤 4.1.17.3.2.6.1

将 $2$ 乘以 $2$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{4 + 7}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.2.6.2

将 $4$ 和 $7$ 相加。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{1}{2}} {(x + h)}^{\frac{2}{3}} x^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3

通过指数相加将 $x^{\frac{1}{2}}$ 乘以 $x^{\frac{2}{3}}$ 。

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解题步骤 4.1.17.3.3.1

移动 $x^{\frac{2}{3}}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - (x^{\frac{2}{3}} x^{\frac{1}{2}}) {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.2

使用幂法则 $a^{m} a^{n} = a^{m + n}$ 合并指数。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2}{3} + \frac{1}{2}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.3

要将 $\frac{2}{3}$ 写成带有公分母的分数，请乘以 $\frac{2}{2}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2}{3} \cdot \frac{2}{2} + \frac{1}{2}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.4

要将 $\frac{1}{2}$ 写成带有公分母的分数，请乘以 $\frac{3}{3}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2}{3} \cdot \frac{2}{2} + \frac{1}{2} \cdot \frac{3}{3}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.5

通过与 $1$ 的合适因数相乘，将每一个表达式写成具有公分母 $6$ 的形式。

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解题步骤 4.1.17.3.3.5.1

将 $\frac{2}{3}$ 乘以 $\frac{2}{2}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2 \cdot 2}{3 \cdot 2} + \frac{1}{2} \cdot \frac{3}{3}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.5.2

将 $3$ 乘以 $2$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2 \cdot 2}{6} + \frac{1}{2} \cdot \frac{3}{3}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.5.3

将 $\frac{1}{2}$ 乘以 $\frac{3}{3}$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2 \cdot 2}{6} + \frac{3}{2 \cdot 3}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.5.4

将 $2$ 乘以 $3$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2 \cdot 2}{6} + \frac{3}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.6

在公分母上合并分子。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{2 \cdot 2 + 3}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.7

化简分子。

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解题步骤 4.1.17.3.3.7.1

将 $2$ 乘以 $2$ 。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{4 + 3}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.1.17.3.3.7.2

将 $4$ 和 $3$ 相加。

$\frac{\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}}}{h}$

解题步骤 4.2

将分子乘以分母的倒数。

$\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}}} \cdot \frac{1}{h}$

解题步骤 4.3

合并。

$\frac{4 (- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}}) \cdot 1}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.4

将 $4$ 乘以 $1$ 。

解题步骤 4.5

从 $- 5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}}$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}}) + {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.6

从 ${(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}}$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}}) - (- {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}}) + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.7

从 $- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}}) - (- {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}})$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}}) + x^{\frac{2}{3}} + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.8

从 $x^{\frac{2}{3}}$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}}) - 1 (- x^{\frac{2}{3}}) + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.9

从 $- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}}) - 1 (- x^{\frac{2}{3}})$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}}) + 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.10

从 $5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}}) - (- 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}}) - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.11

从 $- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}}) - (- 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}}) - x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.12

从 $- x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}}) - (x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.13

从 $- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}}) - (x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}})$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) - {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.14

从 $- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}}) - {(x + h)}^{\frac{2}{3}}$ 中分解出因数 $- 1$ 。

$\frac{4 (- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + {(x + h)}^{\frac{2}{3}}))}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.15

化简表达式。

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解题步骤 4.15.1

将 $- (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + {(x + h)}^{\frac{2}{3}})$ 重写为 $- 1 (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + {(x + h)}^{\frac{2}{3}})$ 。

$\frac{4 (- 1 (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + {(x + h)}^{\frac{2}{3}}))}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.15.2

将负号移到分数的前面。

$- \frac{4 (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$

解题步骤 4.15.3

将 $- \frac{4 (5 {(h + x)}^{\frac{11}{6}} x^{\frac{2}{3}} - {(h + x)}^{\frac{7}{6}} x^{\frac{2}{3}} - x^{\frac{2}{3}} - 5 x^{\frac{11}{6}} {(x + h)}^{\frac{2}{3}} + x^{\frac{7}{6}} {(x + h)}^{\frac{2}{3}} + {(x + h)}^{\frac{2}{3}})}{x^{\frac{2}{3}} {(x + h)}^{\frac{2}{3}} h}$ 中的因式重新排序。

解题步骤 5

微积分学 示例

微积分学示例