Calculus Examples

$y = \frac{x^{6}}{1 - x^{5}}$

Step 1

Differentiate using the Quotient Rule which states that $\frac{d}{d x} [\frac{f (x)}{g (x)}]$ is $\frac{g (x) \frac{d}{d x} [f (x)] - f (x) \frac{d}{d x} [g (x)]}{{g (x)}^{2}}$ where $f (x) = x^{6}$ and $g (x) = 1 - x^{5}$ .

$\frac{(1 - x^{5}) \frac{d}{d x} [x^{6}] - x^{6} \frac{d}{d x} [1 - x^{5}]}{{(1 - x^{5})}^{2}}$

Step 2

Differentiate.

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Step 2.1

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 6$ .

$\frac{(1 - x^{5}) (6 x^{5}) - x^{6} \frac{d}{d x} [1 - x^{5}]}{{(1 - x^{5})}^{2}}$

Step 2.2

Move $6$ to the left of $1 - x^{5}$ .

$\frac{6 \cdot (1 - x^{5}) x^{5} - x^{6} \frac{d}{d x} [1 - x^{5}]}{{(1 - x^{5})}^{2}}$

Step 2.3

By the Sum Rule, the derivative of $1 - x^{5}$ with respect to $x$ is $\frac{d}{d x} [1] + \frac{d}{d x} [- x^{5}]$ .

$\frac{6 (1 - x^{5}) x^{5} - x^{6} (\frac{d}{d x} [1] + \frac{d}{d x} [- x^{5}])}{{(1 - x^{5})}^{2}}$

Step 2.4

Since $1$ is constant with respect to $x$ , the derivative of $1$ with respect to $x$ is $0$ .

$\frac{6 (1 - x^{5}) x^{5} - x^{6} (0 + \frac{d}{d x} [- x^{5}])}{{(1 - x^{5})}^{2}}$

Step 2.5

Add $0$ and $\frac{d}{d x} [- x^{5}]$ .

$\frac{6 (1 - x^{5}) x^{5} - x^{6} \frac{d}{d x} [- x^{5}]}{{(1 - x^{5})}^{2}}$

Step 2.6

Since $- 1$ is constant with respect to $x$ , the derivative of $- x^{5}$ with respect to $x$ is $- \frac{d}{d x} [x^{5}]$ .

$\frac{6 (1 - x^{5}) x^{5} - x^{6} (- \frac{d}{d x} [x^{5}])}{{(1 - x^{5})}^{2}}$

Step 2.7

Multiply.

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Step 2.7.1

Multiply $- 1$ by $- 1$ .

$\frac{6 (1 - x^{5}) x^{5} + 1 x^{6} \frac{d}{d x} [x^{5}]}{{(1 - x^{5})}^{2}}$

Step 2.7.2

Multiply $x^{6}$ by $1$ .

$\frac{6 (1 - x^{5}) x^{5} + x^{6} \frac{d}{d x} [x^{5}]}{{(1 - x^{5})}^{2}}$

Step 2.8

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

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

Step 3

Multiply $x^{6}$ by $x^{4}$ by adding the exponents.

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Step 3.1

Move $x^{4}$ .

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

Step 3.2

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

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

Step 3.3

Add $4$ and $6$ .

$\frac{6 (1 - x^{5}) x^{5} + x^{10} \cdot 5}{{(1 - x^{5})}^{2}}$

Step 4

Move $5$ to the left of $x^{10}$ .

$\frac{6 (1 - x^{5}) x^{5} + 5 \cdot x^{10}}{{(1 - x^{5})}^{2}}$

Step 5

Simplify.

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Step 5.1

Apply the distributive property.

$\frac{(6 \cdot 1 + 6 (- x^{5})) x^{5} + 5 x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.2

Apply the distributive property.

$\frac{6 \cdot 1 x^{5} + 6 (- x^{5}) x^{5} + 5 x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.3

Simplify the numerator.

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Step 5.3.1

Simplify each term.

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Step 5.3.1.1

Multiply $6$ by $1$ .

$\frac{6 x^{5} + 6 (- x^{5}) x^{5} + 5 x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.3.1.2

Multiply $x^{5}$ by $x^{5}$ by adding the exponents.

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Step 5.3.1.2.1

Move $x^{5}$ .

$\frac{6 x^{5} + 6 (- (x^{5} x^{5})) + 5 x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.3.1.2.2

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

$\frac{6 x^{5} + 6 (- x^{5 + 5}) + 5 x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.3.1.2.3

Add $5$ and $5$ .

$\frac{6 x^{5} + 6 (- x^{10}) + 5 x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.3.1.3

Multiply $- 1$ by $6$ .

$\frac{6 x^{5} - 6 x^{10} + 5 x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.3.2

Add $- 6 x^{10}$ and $5 x^{10}$ .

$\frac{6 x^{5} - x^{10}}{{(1 - x^{5})}^{2}}$

Step 5.4

Reorder terms.

$\frac{- x^{10} + 6 x^{5}}{{(- x^{5} + 1)}^{2}}$

Step 5.5

Factor $x^{5}$ out of $- x^{10} + 6 x^{5}$ .

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Step 5.5.1

Factor $x^{5}$ out of $- x^{10}$ .

$\frac{x^{5} (- x^{5}) + 6 x^{5}}{{(- x^{5} + 1)}^{2}}$

Step 5.5.2

Factor $x^{5}$ out of $6 x^{5}$ .

$\frac{x^{5} (- x^{5}) + x^{5} \cdot 6}{{(- x^{5} + 1)}^{2}}$

Step 5.5.3

Factor $x^{5}$ out of $x^{5} (- x^{5}) + x^{5} \cdot 6$ .

$\frac{x^{5} (- x^{5} + 6)}{{(- x^{5} + 1)}^{2}}$

Step 5.6

Factor $- 1$ out of $- x^{5}$ .

$\frac{x^{5} (- (x^{5}) + 6)}{{(- x^{5} + 1)}^{2}}$

Step 5.7

Rewrite $6$ as $- 1 (- 6)$ .

$\frac{x^{5} (- (x^{5}) - 1 (- 6))}{{(- x^{5} + 1)}^{2}}$

Step 5.8

Factor $- 1$ out of $- (x^{5}) - 1 (- 6)$ .

$\frac{x^{5} (- (x^{5} - 6))}{{(- x^{5} + 1)}^{2}}$

Step 5.9

Rewrite $- (x^{5} - 6)$ as $- 1 (x^{5} - 6)$ .

$\frac{x^{5} (- 1 (x^{5} - 6))}{{(- x^{5} + 1)}^{2}}$

Step 5.10

Move the negative in front of the fraction.

$- \frac{x^{5} (x^{5} - 6)}{{(- x^{5} + 1)}^{2}}$