Calculus Examples

$y = \frac{{(3 x - 2)}^{6}}{{(2 x + 5)}^{4}}$

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 $f (x) = {(3 x - 2)}^{6}$ and $g (x) = {(2 x + 5)}^{4}$ .

$\frac{{(2 x + 5)}^{4} \frac{d}{d x} [{(3 x - 2)}^{6}] - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{({(2 x + 5)}^{4})}^{2}}$

Step 2

Multiply the exponents in ${({(2 x + 5)}^{4})}^{2}$ .

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Step 2.1

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

$\frac{{(2 x + 5)}^{4} \frac{d}{d x} [{(3 x - 2)}^{6}] - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{4 \cdot 2}}$

Step 2.2

Multiply $4$ by $2$ .

$\frac{{(2 x + 5)}^{4} \frac{d}{d x} [{(3 x - 2)}^{6}] - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 3

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{6}$ and $g (x) = 3 x - 2$ .

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Step 3.1

To apply the Chain Rule, set $u_{1}$ as $3 x - 2$ .

$\frac{{(2 x + 5)}^{4} (\frac{d}{d u_{1}} [{u_{1}}^{6}] \frac{d}{d x} [3 x - 2]) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 3.2

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

$\frac{{(2 x + 5)}^{4} (6 {u_{1}}^{5} \frac{d}{d x} [3 x - 2]) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 3.3

Replace all occurrences of $u_{1}$ with $3 x - 2$ .

$\frac{{(2 x + 5)}^{4} (6 {(3 x - 2)}^{5} \frac{d}{d x} [3 x - 2]) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4

Differentiate.

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Step 4.1

Move $6$ to the left of ${(2 x + 5)}^{4}$ .

$\frac{6 \cdot {(2 x + 5)}^{4} {(3 x - 2)}^{5} \frac{d}{d x} [3 x - 2] - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4.2

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

$\frac{6 {(2 x + 5)}^{4} {(3 x - 2)}^{5} (\frac{d}{d x} [3 x] + \frac{d}{d x} [- 2]) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4.3

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

$\frac{6 {(2 x + 5)}^{4} {(3 x - 2)}^{5} (3 \frac{d}{d x} [x] + \frac{d}{d x} [- 2]) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4.4

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

$\frac{6 {(2 x + 5)}^{4} {(3 x - 2)}^{5} (3 \cdot 1 + \frac{d}{d x} [- 2]) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4.5

Multiply $3$ by $1$ .

$\frac{6 {(2 x + 5)}^{4} {(3 x - 2)}^{5} (3 + \frac{d}{d x} [- 2]) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4.6

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

$\frac{6 {(2 x + 5)}^{4} {(3 x - 2)}^{5} (3 + 0) - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4.7

Simplify the expression.

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Step 4.7.1

Add $3$ and $0$ .

$\frac{6 {(2 x + 5)}^{4} {(3 x - 2)}^{5} \cdot 3 - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 4.7.2

Multiply $3$ by $6$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - {(3 x - 2)}^{6} \frac{d}{d x} [{(2 x + 5)}^{4}]}{{(2 x + 5)}^{8}}$

Step 5

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{4}$ and $g (x) = 2 x + 5$ .

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Step 5.1

To apply the Chain Rule, set $u_{2}$ as $2 x + 5$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - {(3 x - 2)}^{6} (\frac{d}{d u_{2}} [{u_{2}}^{4}] \frac{d}{d x} [2 x + 5])}{{(2 x + 5)}^{8}}$

Step 5.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{2}} [{u_{2}}^{n}]$ is $n {u_{2}}^{n - 1}$ where $n = 4$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - {(3 x - 2)}^{6} (4 {u_{2}}^{3} \frac{d}{d x} [2 x + 5])}{{(2 x + 5)}^{8}}$

Step 5.3

Replace all occurrences of $u_{2}$ with $2 x + 5$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - {(3 x - 2)}^{6} (4 {(2 x + 5)}^{3} \frac{d}{d x} [2 x + 5])}{{(2 x + 5)}^{8}}$

Step 6

Differentiate.

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Step 6.1

Multiply $4$ by $- 1$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} ({(2 x + 5)}^{3} \frac{d}{d x} [2 x + 5])}{{(2 x + 5)}^{8}}$

Step 6.2

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

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} ({(2 x + 5)}^{3} (\frac{d}{d x} [2 x] + \frac{d}{d x} [5]))}{{(2 x + 5)}^{8}}$

Step 6.3

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

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} ({(2 x + 5)}^{3} (2 \frac{d}{d x} [x] + \frac{d}{d x} [5]))}{{(2 x + 5)}^{8}}$

Step 6.4

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

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} ({(2 x + 5)}^{3} (2 \cdot 1 + \frac{d}{d x} [5]))}{{(2 x + 5)}^{8}}$

Step 6.5

Multiply $2$ by $1$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} ({(2 x + 5)}^{3} (2 + \frac{d}{d x} [5]))}{{(2 x + 5)}^{8}}$

Step 6.6

Since $5$ is constant with respect to $x$ , the derivative of $5$ with respect to $x$ is $0$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} ({(2 x + 5)}^{3} (2 + 0))}{{(2 x + 5)}^{8}}$

Step 6.7

Simplify the expression.

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Step 6.7.1

Add $2$ and $0$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} ({(2 x + 5)}^{3} \cdot 2)}{{(2 x + 5)}^{8}}$

Step 6.7.2

Move $2$ to the left of ${(2 x + 5)}^{3}$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 4 {(3 x - 2)}^{6} (2 \cdot {(2 x + 5)}^{3})}{{(2 x + 5)}^{8}}$

Step 6.7.3

Multiply $2$ by $- 4$ .

$\frac{18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 8 {(3 x - 2)}^{6} {(2 x + 5)}^{3}}{{(2 x + 5)}^{8}}$

Step 7

Simplify.

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Step 7.1

Simplify the numerator.

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Step 7.1.1

Factor $2 {(2 x + 5)}^{3} {(3 x - 2)}^{5}$ out of $18 {(2 x + 5)}^{4} {(3 x - 2)}^{5} - 8 {(3 x - 2)}^{6} {(2 x + 5)}^{3}$ .

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Step 7.1.1.1

Factor $2 {(2 x + 5)}^{3} {(3 x - 2)}^{5}$ out of $18 {(2 x + 5)}^{4} {(3 x - 2)}^{5}$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (9 (2 x + 5)) - 8 {(3 x - 2)}^{6} {(2 x + 5)}^{3}}{{(2 x + 5)}^{8}}$

Step 7.1.1.2

Factor $2 {(2 x + 5)}^{3} {(3 x - 2)}^{5}$ out of $- 8 {(3 x - 2)}^{6} {(2 x + 5)}^{3}$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (9 (2 x + 5)) + 2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (- 4 (3 x - 2))}{{(2 x + 5)}^{8}}$

Step 7.1.1.3

Factor $2 {(2 x + 5)}^{3} {(3 x - 2)}^{5}$ out of $2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (9 (2 x + 5)) + 2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (- 4 (3 x - 2))$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (9 (2 x + 5) - 4 (3 x - 2))}{{(2 x + 5)}^{8}}$

Step 7.1.2

Apply the distributive property.

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (9 (2 x) + 9 \cdot 5 - 4 (3 x - 2))}{{(2 x + 5)}^{8}}$

Step 7.1.3

Multiply $2$ by $9$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (18 x + 9 \cdot 5 - 4 (3 x - 2))}{{(2 x + 5)}^{8}}$

Step 7.1.4

Multiply $9$ by $5$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (18 x + 45 - 4 (3 x - 2))}{{(2 x + 5)}^{8}}$

Step 7.1.5

Apply the distributive property.

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (18 x + 45 - 4 (3 x) - 4 \cdot - 2)}{{(2 x + 5)}^{8}}$

Step 7.1.6

Multiply $3$ by $- 4$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (18 x + 45 - 12 x - 4 \cdot - 2)}{{(2 x + 5)}^{8}}$

Step 7.1.7

Multiply $- 4$ by $- 2$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (18 x + 45 - 12 x + 8)}{{(2 x + 5)}^{8}}$

Step 7.1.8

Subtract $12 x$ from $18 x$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (6 x + 45 + 8)}{{(2 x + 5)}^{8}}$

Step 7.1.9

Add $45$ and $8$ .

$\frac{2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (6 x + 53)}{{(2 x + 5)}^{8}}$

Step 7.2

Cancel the common factor of ${(2 x + 5)}^{3}$ and ${(2 x + 5)}^{8}$ .

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Step 7.2.1

Factor ${(2 x + 5)}^{3}$ out of $2 {(2 x + 5)}^{3} {(3 x - 2)}^{5} (6 x + 53)$ .

$\frac{{(2 x + 5)}^{3} (2 {(3 x - 2)}^{5} (6 x + 53))}{{(2 x + 5)}^{8}}$

Step 7.2.2

Cancel the common factors.

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Step 7.2.2.1

Factor ${(2 x + 5)}^{3}$ out of ${(2 x + 5)}^{8}$ .

$\frac{{(2 x + 5)}^{3} (2 {(3 x - 2)}^{5} (6 x + 53))}{{(2 x + 5)}^{3} {(2 x + 5)}^{5}}$

Step 7.2.2.2

Cancel the common factor.

$\frac{{(2 x + 5)}^{3} (2 {(3 x - 2)}^{5} (6 x + 53))}{{(2 x + 5)}^{3} {(2 x + 5)}^{5}}$

Step 7.2.2.3

Rewrite the expression.

$\frac{2 {(3 x - 2)}^{5} (6 x + 53)}{{(2 x + 5)}^{5}}$