Calculus Examples

$y = 25 x^{\frac{1}{5}} (x^{5} + 17)$

Step 1

Since $25$ is constant with respect to $x$ , the derivative of $25 x^{\frac{1}{5}} (x^{5} + 17)$ with respect to $x$ is $25 \frac{d}{d x} [x^{\frac{1}{5}} (x^{5} + 17)]$ .

$25 \frac{d}{d x} [x^{\frac{1}{5}} (x^{5} + 17)]$

Step 2

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x^{\frac{1}{5}}$ and $g (x) = x^{5} + 17$ .

$25 (x^{\frac{1}{5}} \frac{d}{d x} [x^{5} + 17] + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 3

Differentiate.

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Step 3.1

By the Sum Rule, the derivative of $x^{5} + 17$ with respect to $x$ is $\frac{d}{d x} [x^{5}] + \frac{d}{d x} [17]$ .

$25 (x^{\frac{1}{5}} (\frac{d}{d x} [x^{5}] + \frac{d}{d x} [17]) + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 3.2

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 5$ .

$25 (x^{\frac{1}{5}} (5 x^{4} + \frac{d}{d x} [17]) + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 3.3

Since $17$ is constant with respect to $x$ , the derivative of $17$ with respect to $x$ is $0$ .

$25 (x^{\frac{1}{5}} (5 x^{4} + 0) + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 3.4

Add $5 x^{4}$ and $0$ .

$25 (x^{\frac{1}{5}} (5 x^{4}) + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 4

Multiply $x^{\frac{1}{5}}$ by $x^{4}$ by adding the exponents.

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Step 4.1

Move $x^{4}$ .

$25 (x^{4} x^{\frac{1}{5}} \cdot 5 + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 4.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$25 (x^{4 + \frac{1}{5}} \cdot 5 + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 4.3

To write $4$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$25 (x^{4 \cdot \frac{5}{5} + \frac{1}{5}} \cdot 5 + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 4.4

Combine $4$ and $\frac{5}{5}$ .

$25 (x^{\frac{4 \cdot 5}{5} + \frac{1}{5}} \cdot 5 + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 4.5

Combine the numerators over the common denominator.

$25 (x^{\frac{4 \cdot 5 + 1}{5}} \cdot 5 + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 4.6

Simplify the numerator.

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Step 4.6.1

Multiply $4$ by $5$ .

$25 (x^{\frac{20 + 1}{5}} \cdot 5 + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 4.6.2

Add $20$ and $1$ .

$25 (x^{\frac{21}{5}} \cdot 5 + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 5

Move $5$ to the left of $x^{\frac{21}{5}}$ .

$25 (5 \cdot x^{\frac{21}{5}} + (x^{5} + 17) \frac{d}{d x} [x^{\frac{1}{5}}])$

Step 6

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{1}{5}$ .

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) (\frac{1}{5} x^{\frac{1}{5} - 1}))$

Step 7

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) (\frac{1}{5} x^{\frac{1}{5} - 1 \cdot \frac{5}{5}}))$

Step 8

Combine $- 1$ and $\frac{5}{5}$ .

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) (\frac{1}{5} x^{\frac{1}{5} + \frac{- 1 \cdot 5}{5}}))$

Step 9

Combine the numerators over the common denominator.

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) (\frac{1}{5} x^{\frac{1 - 1 \cdot 5}{5}}))$

Step 10

Simplify the numerator.

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Step 10.1

Multiply $- 1$ by $5$ .

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) (\frac{1}{5} x^{\frac{1 - 5}{5}}))$

Step 10.2

Subtract $5$ from $1$ .

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) (\frac{1}{5} x^{\frac{- 4}{5}}))$

Step 11

Move the negative in front of the fraction.

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) (\frac{1}{5} x^{- \frac{4}{5}}))$

Step 12

Combine $\frac{1}{5}$ and $x^{- \frac{4}{5}}$ .

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) \frac{x^{- \frac{4}{5}}}{5})$

Step 13

Move $x^{- \frac{4}{5}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$25 (5 x^{\frac{21}{5}} + (x^{5} + 17) \frac{1}{5 x^{\frac{4}{5}}})$

Step 14

Simplify.

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Step 14.1

Apply the distributive property.

$25 (5 x^{\frac{21}{5}} + x^{5} \frac{1}{5 x^{\frac{4}{5}}} + 17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.2

Apply the distributive property.

$25 (5 x^{\frac{21}{5}}) + 25 (x^{5} \frac{1}{5 x^{\frac{4}{5}}}) + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3

Combine terms.

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Step 14.3.1

Multiply $5$ by $25$ .

$125 x^{\frac{21}{5}} + 25 (x^{5} \frac{1}{5 x^{\frac{4}{5}}}) + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.2

Combine $x^{5}$ and $\frac{1}{5 x^{\frac{4}{5}}}$ .

$125 x^{\frac{21}{5}} + 25 \frac{x^{5}}{5 x^{\frac{4}{5}}} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.3

Move $x^{\frac{4}{5}}$ to the numerator using the negative exponent rule $\frac{1}{b^{n}} = b^{- n}$ .

$125 x^{\frac{21}{5}} + 25 \frac{x^{5} x^{- \frac{4}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.4

Multiply $x^{5}$ by $x^{- \frac{4}{5}}$ by adding the exponents.

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Step 14.3.4.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$125 x^{\frac{21}{5}} + 25 \frac{x^{5 - \frac{4}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.4.2

To write $5$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$125 x^{\frac{21}{5}} + 25 \frac{x^{5 \cdot \frac{5}{5} - \frac{4}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.4.3

Combine $5$ and $\frac{5}{5}$ .

$125 x^{\frac{21}{5}} + 25 \frac{x^{\frac{5 \cdot 5}{5} - \frac{4}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.4.4

Combine the numerators over the common denominator.

$125 x^{\frac{21}{5}} + 25 \frac{x^{\frac{5 \cdot 5 - 4}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.4.5

Simplify the numerator.

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Step 14.3.4.5.1

Multiply $5$ by $5$ .

$125 x^{\frac{21}{5}} + 25 \frac{x^{\frac{25 - 4}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.4.5.2

Subtract $4$ from $25$ .

$125 x^{\frac{21}{5}} + 25 \frac{x^{\frac{21}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.5

Combine $25$ and $\frac{x^{\frac{21}{5}}}{5}$ .

$125 x^{\frac{21}{5}} + \frac{25 x^{\frac{21}{5}}}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.6

Factor $5$ out of $25 x^{\frac{21}{5}}$ .

$125 x^{\frac{21}{5}} + \frac{5 (5 x^{\frac{21}{5}})}{5} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.7

Cancel the common factors.

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Step 14.3.7.1

Factor $5$ out of $5$ .

$125 x^{\frac{21}{5}} + \frac{5 (5 x^{\frac{21}{5}})}{5 (1)} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.7.2

Cancel the common factor.

$125 x^{\frac{21}{5}} + \frac{5 (5 x^{\frac{21}{5}})}{5 \cdot 1} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.7.3

Rewrite the expression.

$125 x^{\frac{21}{5}} + \frac{5 x^{\frac{21}{5}}}{1} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.7.4

Divide $5 x^{\frac{21}{5}}$ by $1$ .

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + 25 (17 \frac{1}{5 x^{\frac{4}{5}}})$

Step 14.3.8

Combine $17$ and $\frac{1}{5 x^{\frac{4}{5}}}$ .

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + 25 \frac{17}{5 x^{\frac{4}{5}}}$

Step 14.3.9

Combine $25$ and $\frac{17}{5 x^{\frac{4}{5}}}$ .

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + \frac{25 \cdot 17}{5 x^{\frac{4}{5}}}$

Step 14.3.10

Multiply $25$ by $17$ .

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + \frac{425}{5 x^{\frac{4}{5}}}$

Step 14.3.11

Factor $5$ out of $425$ .

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + \frac{5 \cdot 85}{5 x^{\frac{4}{5}}}$

Step 14.3.12

Cancel the common factors.

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Step 14.3.12.1

Factor $5$ out of $5 x^{\frac{4}{5}}$ .

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + \frac{5 \cdot 85}{5 (x^{\frac{4}{5}})}$

Step 14.3.12.2

Cancel the common factor.

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + \frac{5 \cdot 85}{5 x^{\frac{4}{5}}}$

Step 14.3.12.3

Rewrite the expression.

$125 x^{\frac{21}{5}} + 5 x^{\frac{21}{5}} + \frac{85}{x^{\frac{4}{5}}}$

Step 14.3.13

Add $125 x^{\frac{21}{5}}$ and $5 x^{\frac{21}{5}}$ .

$130 x^{\frac{21}{5}} + \frac{85}{x^{\frac{4}{5}}}$