Calculus Examples

$\int \frac{1}{u^{3}} d u$

Step 1

Apply basic rules of exponents.

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Step 1.1

Move $u^{3}$ out of the denominator by raising it to the $- 1$ power.

$\int {(u^{3})}^{- 1} d u$

Step 1.2

Multiply the exponents in ${(u^{3})}^{- 1}$ .

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Step 1.2.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\int u^{3 \cdot - 1} d u$

Step 1.2.2

Multiply $3$ by $- 1$ .

$\int u^{- 3} d u$

Step 2

By the Power Rule, the integral of $u^{- 3}$ with respect to $u$ is $- \frac{1}{2} u^{- 2}$ .

$- \frac{1}{2} u^{- 2} + C$

Step 3

Simplify the answer.

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Step 3.1

Rewrite $- \frac{1}{2} u^{- 2} + C$ as $- \frac{1}{2} \cdot \frac{1}{u^{2}} + C$ .

$- \frac{1}{2} \cdot \frac{1}{u^{2}} + C$

Step 3.2

Simplify.

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Step 3.2.1

Multiply $\frac{1}{u^{2}}$ by $\frac{1}{2}$ .

$- \frac{1}{u^{2} \cdot 2} + C$

Step 3.2.2

Move $2$ to the left of $u^{2}$ .

$- \frac{1}{2 u^{2}} + C$