Calculus Examples

${(\frac{5 t^{2}}{3 t^{2} + 2})}^{3}$

Step 1

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{3}$ and $g (t) = \frac{5 t^{2}}{3 t^{2} + 2}$ .

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Step 1.1

To apply the Chain Rule, set $u$ as $\frac{5 t^{2}}{3 t^{2} + 2}$ .

$\frac{d}{d u} [u^{3}] \frac{d}{d t} [\frac{5 t^{2}}{3 t^{2} + 2}]$

Step 1.2

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

$3 u^{2} \frac{d}{d t} [\frac{5 t^{2}}{3 t^{2} + 2}]$

Step 1.3

Replace all occurrences of $u$ with $\frac{5 t^{2}}{3 t^{2} + 2}$ .

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

Step 2

Differentiate using the Constant Multiple Rule.

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Step 2.1

Since $5$ is constant with respect to $t$ , the derivative of $\frac{5 t^{2}}{3 t^{2} + 2}$ with respect to $t$ is $5 \frac{d}{d t} [\frac{t^{2}}{3 t^{2} + 2}]$ .

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

Step 2.2

Multiply $5$ by $3$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{d}{d t} [\frac{t^{2}}{3 t^{2} + 2}]$

Step 3

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

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{(3 t^{2} + 2) \frac{d}{d t} [t^{2}] - t^{2} \frac{d}{d t} [3 t^{2} + 2]}{{(3 t^{2} + 2)}^{2}}$

Step 4

Differentiate.

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Step 4.1

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

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{(3 t^{2} + 2) (2 t) - t^{2} \frac{d}{d t} [3 t^{2} + 2]}{{(3 t^{2} + 2)}^{2}}$

Step 4.2

Move $2$ to the left of $3 t^{2} + 2$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 \cdot (3 t^{2} + 2) t - t^{2} \frac{d}{d t} [3 t^{2} + 2]}{{(3 t^{2} + 2)}^{2}}$

Step 4.3

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

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - t^{2} (\frac{d}{d t} [3 t^{2}] + \frac{d}{d t} [2])}{{(3 t^{2} + 2)}^{2}}$

Step 4.4

Since $3$ is constant with respect to $t$ , the derivative of $3 t^{2}$ with respect to $t$ is $3 \frac{d}{d t} [t^{2}]$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - t^{2} (3 \frac{d}{d t} [t^{2}] + \frac{d}{d t} [2])}{{(3 t^{2} + 2)}^{2}}$

Step 4.5

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

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - t^{2} (3 (2 t) + \frac{d}{d t} [2])}{{(3 t^{2} + 2)}^{2}}$

Step 4.6

Multiply $2$ by $3$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - t^{2} (6 t + \frac{d}{d t} [2])}{{(3 t^{2} + 2)}^{2}}$

Step 4.7

Since $2$ is constant with respect to $t$ , the derivative of $2$ with respect to $t$ is $0$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - t^{2} (6 t + 0)}{{(3 t^{2} + 2)}^{2}}$

Step 4.8

Simplify the expression.

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Step 4.8.1

Add $6 t$ and $0$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - t^{2} (6 t)}{{(3 t^{2} + 2)}^{2}}$

Step 4.8.2

Multiply $6$ by $- 1$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - 6 t^{2} t}{{(3 t^{2} + 2)}^{2}}$

Step 5

Raise $t$ to the power of $1$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - 6 (t^{1} t^{2})}{{(3 t^{2} + 2)}^{2}}$

Step 6

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

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - 6 t^{1 + 2}}{{(3 t^{2} + 2)}^{2}}$

Step 7

Add $1$ and $2$ .

$15 {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2} \frac{2 (3 t^{2} + 2) t - 6 t^{3}}{{(3 t^{2} + 2)}^{2}}$

Step 8

Combine $\frac{2 (3 t^{2} + 2) t - 6 t^{3}}{{(3 t^{2} + 2)}^{2}}$ and $15$ .

$\frac{(2 (3 t^{2} + 2) t - 6 t^{3}) \cdot 15}{{(3 t^{2} + 2)}^{2}} {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2}$

Step 9

Move $15$ to the left of $2 (3 t^{2} + 2) t - 6 t^{3}$ .

$\frac{15 \cdot (2 (3 t^{2} + 2) t - 6 t^{3})}{{(3 t^{2} + 2)}^{2}} {(\frac{5 t^{2}}{3 t^{2} + 2})}^{2}$

Step 10

Simplify.

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Step 10.1

Apply the product rule to $\frac{5 t^{2}}{3 t^{2} + 2}$ .

$\frac{15 (2 (3 t^{2} + 2) t - 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{{(5 t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.2

Apply the product rule to $5 t^{2}$ .

$\frac{15 (2 (3 t^{2} + 2) t - 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.3

Apply the distributive property.

$\frac{15 ((2 (3 t^{2}) + 2 \cdot 2) t - 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.4

Apply the distributive property.

$\frac{15 (2 (3 t^{2}) t + 2 \cdot 2 t - 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.5

Apply the distributive property.

$\frac{15 (2 (3 t^{2}) t) + 15 (2 \cdot 2 t) + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6

Combine terms.

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Step 10.6.1

Multiply $3$ by $2$ .

$\frac{15 (6 t^{2} t) + 15 (2 \cdot 2 t) + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.2

Raise $t$ to the power of $1$ .

$\frac{15 (6 (t^{1} t^{2})) + 15 (2 \cdot 2 t) + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.3

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

$\frac{15 (6 t^{1 + 2}) + 15 (2 \cdot 2 t) + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.4

Add $1$ and $2$ .

$\frac{15 (6 t^{3}) + 15 (2 \cdot 2 t) + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.5

Multiply $6$ by $15$ .

$\frac{90 t^{3} + 15 (2 \cdot 2 t) + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.6

Multiply $2$ by $2$ .

$\frac{90 t^{3} + 15 (4 t) + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.7

Multiply $4$ by $15$ .

$\frac{90 t^{3} + 60 t + 15 (- 6 t^{3})}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.8

Multiply $- 6$ by $15$ .

$\frac{90 t^{3} + 60 t - 90 t^{3}}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.9

Subtract $90 t^{3}$ from $90 t^{3}$ .

$\frac{60 t + 0}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.10

Add $60 t$ and $0$ .

$\frac{60 t}{{(3 t^{2} + 2)}^{2}} \cdot \frac{5^{2} {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.11

Raise $5$ to the power of $2$ .

$\frac{60 t}{{(3 t^{2} + 2)}^{2}} \cdot \frac{25 {(t^{2})}^{2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.12

Multiply the exponents in ${(t^{2})}^{2}$ .

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Step 10.6.12.1

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

$\frac{60 t}{{(3 t^{2} + 2)}^{2}} \cdot \frac{25 t^{2 \cdot 2}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.12.2

Multiply $2$ by $2$ .

$\frac{60 t}{{(3 t^{2} + 2)}^{2}} \cdot \frac{25 t^{4}}{{(3 t^{2} + 2)}^{2}}$

Step 10.6.13

Multiply $\frac{60 t}{{(3 t^{2} + 2)}^{2}}$ by $\frac{25 t^{4}}{{(3 t^{2} + 2)}^{2}}$ .

$\frac{60 t (25 t^{4})}{{(3 t^{2} + 2)}^{2} {(3 t^{2} + 2)}^{2}}$

Step 10.6.14

Multiply $25$ by $60$ .

$\frac{1500 t \cdot t^{4}}{{(3 t^{2} + 2)}^{2} {(3 t^{2} + 2)}^{2}}$

Step 10.6.15

Multiply $t$ by $t^{4}$ by adding the exponents.

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Step 10.6.15.1

Move $t^{4}$ .

$\frac{1500 (t^{4} t)}{{(3 t^{2} + 2)}^{2} {(3 t^{2} + 2)}^{2}}$

Step 10.6.15.2

Multiply $t^{4}$ by $t$ .

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Step 10.6.15.2.1

Raise $t$ to the power of $1$ .

$\frac{1500 (t^{4} t^{1})}{{(3 t^{2} + 2)}^{2} {(3 t^{2} + 2)}^{2}}$

Step 10.6.15.2.2

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

$\frac{1500 t^{4 + 1}}{{(3 t^{2} + 2)}^{2} {(3 t^{2} + 2)}^{2}}$

Step 10.6.15.3

Add $4$ and $1$ .

$\frac{1500 t^{5}}{{(3 t^{2} + 2)}^{2} {(3 t^{2} + 2)}^{2}}$

Step 10.6.16

Multiply ${(3 t^{2} + 2)}^{2}$ by ${(3 t^{2} + 2)}^{2}$ by adding the exponents.

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Step 10.6.16.1

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

$\frac{1500 t^{5}}{{(3 t^{2} + 2)}^{2 + 2}}$

Step 10.6.16.2

Add $2$ and $2$ .

$\frac{1500 t^{5}}{{(3 t^{2} + 2)}^{4}}$