Calculus Examples

$f (x) = 12 x {(x^{2} + 10)}^{5}$

Step 1

Since $12$ is constant with respect to $x$ , the derivative of $12 x {(x^{2} + 10)}^{5}$ with respect to $x$ is $12 \frac{d}{d x} [x {(x^{2} + 10)}^{5}]$ .

$12 \frac{d}{d x} [x {(x^{2} + 10)}^{5}]$

Step 2

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = {(x^{2} + 10)}^{5}$ .

$12 (x \frac{d}{d x} [{(x^{2} + 10)}^{5}] + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 3

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{5}$ and $g (x) = x^{2} + 10$ .

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Step 3.1

To apply the Chain Rule, set $u$ as $x^{2} + 10$ .

$12 (x (\frac{d}{d u} [u^{5}] \frac{d}{d x} [x^{2} + 10]) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 3.2

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

$12 (x (5 u^{4} \frac{d}{d x} [x^{2} + 10]) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 3.3

Replace all occurrences of $u$ with $x^{2} + 10$ .

$12 (x (5 {(x^{2} + 10)}^{4} \frac{d}{d x} [x^{2} + 10]) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 4

Differentiate.

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Step 4.1

By the Sum Rule, the derivative of $x^{2} + 10$ with respect to $x$ is $\frac{d}{d x} [x^{2}] + \frac{d}{d x} [10]$ .

$12 (x (5 {(x^{2} + 10)}^{4} (\frac{d}{d x} [x^{2}] + \frac{d}{d x} [10])) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 4.2

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

$12 (x (5 {(x^{2} + 10)}^{4} (2 x + \frac{d}{d x} [10])) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 4.3

Since $10$ is constant with respect to $x$ , the derivative of $10$ with respect to $x$ is $0$ .

$12 (x (5 {(x^{2} + 10)}^{4} (2 x + 0)) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 4.4

Simplify the expression.

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Step 4.4.1

Add $2 x$ and $0$ .

$12 (x (5 {(x^{2} + 10)}^{4} (2 x)) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 4.4.2

Multiply $2$ by $5$ .

$12 (x (10 {(x^{2} + 10)}^{4} x) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 5

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

$12 (x^{1} x (10 {(x^{2} + 10)}^{4}) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 6

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

$12 (x^{1} x^{1} (10 {(x^{2} + 10)}^{4}) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 7

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

$12 (x^{1 + 1} (10 {(x^{2} + 10)}^{4}) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 8

Add $1$ and $1$ .

$12 (x^{2} (10 {(x^{2} + 10)}^{4}) + {(x^{2} + 10)}^{5} \frac{d}{d x} [x])$

Step 9

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

$12 (x^{2} (10 {(x^{2} + 10)}^{4}) + {(x^{2} + 10)}^{5} \cdot 1)$

Step 10

Multiply ${(x^{2} + 10)}^{5}$ by $1$ .

$12 (x^{2} (10 {(x^{2} + 10)}^{4}) + {(x^{2} + 10)}^{5})$

Step 11

Simplify.

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Step 11.1

Apply the distributive property.

$12 (x^{2} (10 {(x^{2} + 10)}^{4})) + 12 {(x^{2} + 10)}^{5}$

Step 11.2

Multiply $10$ by $12$ .

$120 (x^{2} ({(x^{2} + 10)}^{4})) + 12 {(x^{2} + 10)}^{5}$

Step 11.3

Factor $12 {(x^{2} + 10)}^{4}$ out of $120 x^{2} {(x^{2} + 10)}^{4} + 12 {(x^{2} + 10)}^{5}$ .

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Step 11.3.1

Factor $12 {(x^{2} + 10)}^{4}$ out of $120 x^{2} {(x^{2} + 10)}^{4}$ .

$12 {(x^{2} + 10)}^{4} (10 x^{2}) + 12 {(x^{2} + 10)}^{5}$

Step 11.3.2

Factor $12 {(x^{2} + 10)}^{4}$ out of $12 {(x^{2} + 10)}^{5}$ .

$12 {(x^{2} + 10)}^{4} (10 x^{2}) + 12 {(x^{2} + 10)}^{4} (x^{2} + 10)$

Step 11.3.3

Factor $12 {(x^{2} + 10)}^{4}$ out of $12 {(x^{2} + 10)}^{4} (10 x^{2}) + 12 {(x^{2} + 10)}^{4} (x^{2} + 10)$ .

$12 {(x^{2} + 10)}^{4} (10 x^{2} + x^{2} + 10)$

Step 11.4

Add $10 x^{2}$ and $x^{2}$ .

$12 {(x^{2} + 10)}^{4} (11 x^{2} + 10)$