Calculus Examples

$(u^{- 2} + u^{- 3}) (u^{5} - 2 u^{2})$

Step 1

Differentiate using the Product Rule which states that $\frac{d}{d u} [f (u) g (u)]$ is $f (u) \frac{d}{d u} [g (u)] + g (u) \frac{d}{d u} [f (u)]$ where $f (u) = u^{- 2} + u^{- 3}$ and $g (u) = u^{5} - 2 u^{2}$ .

$(u^{- 2} + u^{- 3}) \frac{d}{d u} [u^{5} - 2 u^{2}] + (u^{5} - 2 u^{2}) \frac{d}{d u} [u^{- 2} + u^{- 3}]$

Step 2

Differentiate.

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Step 2.1

By the Sum Rule, the derivative of $u^{5} - 2 u^{2}$ with respect to $u$ is $\frac{d}{d u} [u^{5}] + \frac{d}{d u} [- 2 u^{2}]$ .

$(u^{- 2} + u^{- 3}) (\frac{d}{d u} [u^{5}] + \frac{d}{d u} [- 2 u^{2}]) + (u^{5} - 2 u^{2}) \frac{d}{d u} [u^{- 2} + u^{- 3}]$

Step 2.2

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

$(u^{- 2} + u^{- 3}) (5 u^{4} + \frac{d}{d u} [- 2 u^{2}]) + (u^{5} - 2 u^{2}) \frac{d}{d u} [u^{- 2} + u^{- 3}]$

Step 2.3

Since $- 2$ is constant with respect to $u$ , the derivative of $- 2 u^{2}$ with respect to $u$ is $- 2 \frac{d}{d u} [u^{2}]$ .

$(u^{- 2} + u^{- 3}) (5 u^{4} - 2 \frac{d}{d u} [u^{2}]) + (u^{5} - 2 u^{2}) \frac{d}{d u} [u^{- 2} + u^{- 3}]$

Step 2.4

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 2$ .

$(u^{- 2} + u^{- 3}) (5 u^{4} - 2 (2 u)) + (u^{5} - 2 u^{2}) \frac{d}{d u} [u^{- 2} + u^{- 3}]$

Step 2.5

Multiply $2$ by $- 2$ .

$(u^{- 2} + u^{- 3}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) \frac{d}{d u} [u^{- 2} + u^{- 3}]$

Step 2.6

By the Sum Rule, the derivative of $u^{- 2} + u^{- 3}$ with respect to $u$ is $\frac{d}{d u} [u^{- 2}] + \frac{d}{d u} [u^{- 3}]$ .

$(u^{- 2} + u^{- 3}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (\frac{d}{d u} [u^{- 2}] + \frac{d}{d u} [u^{- 3}])$

Step 2.7

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = - 2$ .

$(u^{- 2} + u^{- 3}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- 2 u^{- 3} + \frac{d}{d u} [u^{- 3}])$

Step 2.8

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = - 3$ .

$(u^{- 2} + u^{- 3}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- 2 u^{- 3} - 3 u^{- 4})$

Step 3

Simplify.

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Step 3.1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(\frac{1}{u^{2}} + u^{- 3}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- 2 u^{- 3} - 3 u^{- 4})$

Step 3.2

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(\frac{1}{u^{2}} + \frac{1}{u^{3}}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- 2 u^{- 3} - 3 u^{- 4})$

Step 3.3

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(\frac{1}{u^{2}} + \frac{1}{u^{3}}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- 2 \frac{1}{u^{3}} - 3 u^{- 4})$

Step 3.4

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(\frac{1}{u^{2}} + \frac{1}{u^{3}}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- 2 \frac{1}{u^{3}} - 3 \frac{1}{u^{4}})$

Step 3.5

Combine terms.

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Step 3.5.1

Combine $- 2$ and $\frac{1}{u^{3}}$ .

$(\frac{1}{u^{2}} + \frac{1}{u^{3}}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (\frac{- 2}{u^{3}} - 3 \frac{1}{u^{4}})$

Step 3.5.2

Move the negative in front of the fraction.

$(\frac{1}{u^{2}} + \frac{1}{u^{3}}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- \frac{2}{u^{3}} - 3 \frac{1}{u^{4}})$

Step 3.5.3

Combine $- 3$ and $\frac{1}{u^{4}}$ .

$(\frac{1}{u^{2}} + \frac{1}{u^{3}}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- \frac{2}{u^{3}} + \frac{- 3}{u^{4}})$

Step 3.5.4

Move the negative in front of the fraction.

$(\frac{1}{u^{2}} + \frac{1}{u^{3}}) (5 u^{4} - 4 u) + (u^{5} - 2 u^{2}) (- \frac{2}{u^{3}} - \frac{3}{u^{4}})$

Step 3.6

Reorder terms.

$(5 u^{4} - 4 u) (\frac{1}{u^{2}} + \frac{1}{u^{3}}) + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7

Simplify each term.

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Step 3.7.1

Expand $(5 u^{4} - 4 u) (\frac{1}{u^{2}} + \frac{1}{u^{3}})$ using the FOIL Method.

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Step 3.7.1.1

Apply the distributive property.

$5 u^{4} (\frac{1}{u^{2}} + \frac{1}{u^{3}}) - 4 u (\frac{1}{u^{2}} + \frac{1}{u^{3}}) + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.1.2

Apply the distributive property.

$5 u^{4} \frac{1}{u^{2}} + 5 u^{4} \frac{1}{u^{3}} - 4 u (\frac{1}{u^{2}} + \frac{1}{u^{3}}) + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.1.3

Apply the distributive property.

$5 u^{4} \frac{1}{u^{2}} + 5 u^{4} \frac{1}{u^{3}} - 4 u \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2

Simplify each term.

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Step 3.7.2.1

Cancel the common factor of $u^{2}$ .

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Step 3.7.2.1.1

Factor $u^{2}$ out of $5 u^{4}$ .

$u^{2} (5 u^{2}) \frac{1}{u^{2}} + 5 u^{4} \frac{1}{u^{3}} - 4 u \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.1.2

Cancel the common factor.

$u^{2} (5 u^{2}) \frac{1}{u^{2}} + 5 u^{4} \frac{1}{u^{3}} - 4 u \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.1.3

Rewrite the expression.

$5 u^{2} + 5 u^{4} \frac{1}{u^{3}} - 4 u \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.2

Cancel the common factor of $u^{3}$ .

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Step 3.7.2.2.1

Factor $u^{3}$ out of $5 u^{4}$ .

$5 u^{2} + u^{3} (5 u) \frac{1}{u^{3}} - 4 u \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.2.2

Cancel the common factor.

$5 u^{2} + u^{3} (5 u) \frac{1}{u^{3}} - 4 u \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.2.3

Rewrite the expression.

$5 u^{2} + 5 u - 4 u \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.3

Cancel the common factor of $u$ .

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Step 3.7.2.3.1

Factor $u$ out of $- 4 u$ .

$5 u^{2} + 5 u + u \cdot - 4 \frac{1}{u^{2}} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.3.2

Factor $u$ out of $u^{2}$ .

$5 u^{2} + 5 u + u \cdot - 4 \frac{1}{u \cdot u} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.3.3

Cancel the common factor.

$5 u^{2} + 5 u + u \cdot - 4 \frac{1}{u \cdot u} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.3.4

Rewrite the expression.

$5 u^{2} + 5 u - 4 \frac{1}{u} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.4

Combine $- 4$ and $\frac{1}{u}$ .

$5 u^{2} + 5 u + \frac{- 4}{u} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.5

Move the negative in front of the fraction.

$5 u^{2} + 5 u - \frac{4}{u} - 4 u \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.6

Cancel the common factor of $u$ .

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Step 3.7.2.6.1

Factor $u$ out of $- 4 u$ .

$5 u^{2} + 5 u - \frac{4}{u} + u \cdot - 4 \frac{1}{u^{3}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.6.2

Factor $u$ out of $u^{3}$ .

$5 u^{2} + 5 u - \frac{4}{u} + u \cdot - 4 \frac{1}{u \cdot u^{2}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.6.3

Cancel the common factor.

$5 u^{2} + 5 u - \frac{4}{u} + u \cdot - 4 \frac{1}{u \cdot u^{2}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.6.4

Rewrite the expression.

$5 u^{2} + 5 u - \frac{4}{u} - 4 \frac{1}{u^{2}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.7

Combine $- 4$ and $\frac{1}{u^{2}}$ .

$5 u^{2} + 5 u - \frac{4}{u} + \frac{- 4}{u^{2}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.2.8

Move the negative in front of the fraction.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} + (- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$

Step 3.7.3

Expand $(- \frac{2}{u^{3}} - \frac{3}{u^{4}}) (u^{5} - 2 u^{2})$ using the FOIL Method.

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Step 3.7.3.1

Apply the distributive property.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - \frac{2}{u^{3}} (u^{5} - 2 u^{2}) - \frac{3}{u^{4}} (u^{5} - 2 u^{2})$

Step 3.7.3.2

Apply the distributive property.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - \frac{2}{u^{3}} u^{5} - \frac{2}{u^{3}} (- 2 u^{2}) - \frac{3}{u^{4}} (u^{5} - 2 u^{2})$

Step 3.7.3.3

Apply the distributive property.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - \frac{2}{u^{3}} u^{5} - \frac{2}{u^{3}} (- 2 u^{2}) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4

Simplify each term.

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Step 3.7.4.1

Cancel the common factor of $u^{3}$ .

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Step 3.7.4.1.1

Move the leading negative in $- \frac{2}{u^{3}}$ into the numerator.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} + \frac{- 2}{u^{3}} u^{5} - \frac{2}{u^{3}} (- 2 u^{2}) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.1.2

Factor $u^{3}$ out of $u^{5}$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} + \frac{- 2}{u^{3}} (u^{3} u^{2}) - \frac{2}{u^{3}} (- 2 u^{2}) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.1.3

Cancel the common factor.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} + \frac{- 2}{u^{3}} (u^{3} u^{2}) - \frac{2}{u^{3}} (- 2 u^{2}) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.1.4

Rewrite the expression.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} - \frac{2}{u^{3}} (- 2 u^{2}) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.2

Cancel the common factor of $u^{2}$ .

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Step 3.7.4.2.1

Move the leading negative in $- \frac{2}{u^{3}}$ into the numerator.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{- 2}{u^{3}} (- 2 u^{2}) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.2.2

Factor $u^{2}$ out of $u^{3}$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{- 2}{u^{2} u} (- 2 u^{2}) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.2.3

Factor $u^{2}$ out of $- 2 u^{2}$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{- 2}{u^{2} u} (u^{2} \cdot - 2) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.2.4

Cancel the common factor.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{- 2}{u^{2} u} (u^{2} \cdot - 2) - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.2.5

Rewrite the expression.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{- 2}{u} \cdot - 2 - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.3

Combine $\frac{- 2}{u}$ and $- 2$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{- 2 \cdot - 2}{u} - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.4

Multiply $- 2$ by $- 2$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - \frac{3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.5

Cancel the common factor of $u^{4}$ .

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Step 3.7.4.5.1

Move the leading negative in $- \frac{3}{u^{4}}$ into the numerator.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} + \frac{- 3}{u^{4}} u^{5} - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.5.2

Factor $u^{4}$ out of $u^{5}$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} + \frac{- 3}{u^{4}} (u^{4} u) - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.5.3

Cancel the common factor.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} + \frac{- 3}{u^{4}} (u^{4} u) - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.5.4

Rewrite the expression.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u - \frac{3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.6

Cancel the common factor of $u^{2}$ .

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Step 3.7.4.6.1

Move the leading negative in $- \frac{3}{u^{4}}$ into the numerator.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{- 3}{u^{4}} (- 2 u^{2})$

Step 3.7.4.6.2

Factor $u^{2}$ out of $u^{4}$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{- 3}{u^{2} u^{2}} (- 2 u^{2})$

Step 3.7.4.6.3

Factor $u^{2}$ out of $- 2 u^{2}$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{- 3}{u^{2} u^{2}} (u^{2} \cdot - 2)$

Step 3.7.4.6.4

Cancel the common factor.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{- 3}{u^{2} u^{2}} (u^{2} \cdot - 2)$

Step 3.7.4.6.5

Rewrite the expression.

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{- 3}{u^{2}} \cdot - 2$

Step 3.7.4.7

Combine $\frac{- 3}{u^{2}}$ and $- 2$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{- 3 \cdot - 2}{u^{2}}$

Step 3.7.4.8

Multiply $- 3$ by $- 2$ .

$5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{6}{u^{2}}$

Step 3.8

Combine the opposite terms in $5 u^{2} + 5 u - \frac{4}{u} - \frac{4}{u^{2}} - 2 u^{2} + \frac{4}{u} - 3 u + \frac{6}{u^{2}}$ .

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Step 3.8.1

Add $- \frac{4}{u}$ and $\frac{4}{u}$ .

$5 u^{2} + 5 u - \frac{4}{u^{2}} - 2 u^{2} + 0 - 3 u + \frac{6}{u^{2}}$

Step 3.8.2

Add $5 u^{2} + 5 u - \frac{4}{u^{2}} - 2 u^{2}$ and $0$ .

$5 u^{2} + 5 u - \frac{4}{u^{2}} - 2 u^{2} - 3 u + \frac{6}{u^{2}}$

Step 3.9

Combine the numerators over the common denominator.

$5 u^{2} + 5 u - 2 u^{2} - 3 u + \frac{- 4 + 6}{u^{2}}$

Step 3.10

Add $- 4$ and $6$ .

$5 u^{2} + 5 u - 2 u^{2} - 3 u + \frac{2}{u^{2}}$

Step 3.11

Subtract $2 u^{2}$ from $5 u^{2}$ .

$3 u^{2} + 5 u - 3 u + \frac{2}{u^{2}}$

Step 3.12

Subtract $3 u$ from $5 u$ .

$3 u^{2} + 2 u + \frac{2}{u^{2}}$