Calculus Examples

$x^{5} + 9 x^{4} - 6 x^{3} - 2 x^{2} + 10 x - 1$

Step 1

Differentiate.

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Step 1.1

By the Sum Rule, the derivative of $x^{5} + 9 x^{4} - 6 x^{3} - 2 x^{2} + 10 x - 1$ with respect to $x$ is $\frac{d}{d x} [x^{5}] + \frac{d}{d x} [9 x^{4}] + \frac{d}{d x} [- 6 x^{3}] + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$ .

$\frac{d}{d x} [x^{5}] + \frac{d}{d x} [9 x^{4}] + \frac{d}{d x} [- 6 x^{3}] + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 1.2

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

$5 x^{4} + \frac{d}{d x} [9 x^{4}] + \frac{d}{d x} [- 6 x^{3}] + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 2

Evaluate $\frac{d}{d x} [9 x^{4}]$ .

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Step 2.1

Since $9$ is constant with respect to $x$ , the derivative of $9 x^{4}$ with respect to $x$ is $9 \frac{d}{d x} [x^{4}]$ .

$5 x^{4} + 9 \frac{d}{d x} [x^{4}] + \frac{d}{d x} [- 6 x^{3}] + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 2.2

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

$5 x^{4} + 9 (4 x^{3}) + \frac{d}{d x} [- 6 x^{3}] + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 2.3

Multiply $4$ by $9$ .

$5 x^{4} + 36 x^{3} + \frac{d}{d x} [- 6 x^{3}] + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 3

Evaluate $\frac{d}{d x} [- 6 x^{3}]$ .

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Step 3.1

Since $- 6$ is constant with respect to $x$ , the derivative of $- 6 x^{3}$ with respect to $x$ is $- 6 \frac{d}{d x} [x^{3}]$ .

$5 x^{4} + 36 x^{3} - 6 \frac{d}{d x} [x^{3}] + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 3.2

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

$5 x^{4} + 36 x^{3} - 6 (3 x^{2}) + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 3.3

Multiply $3$ by $- 6$ .

$5 x^{4} + 36 x^{3} - 18 x^{2} + \frac{d}{d x} [- 2 x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 4

Evaluate $\frac{d}{d x} [- 2 x^{2}]$ .

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Step 4.1

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

$5 x^{4} + 36 x^{3} - 18 x^{2} - 2 \frac{d}{d x} [x^{2}] + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 4.2

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

$5 x^{4} + 36 x^{3} - 18 x^{2} - 2 (2 x) + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 4.3

Multiply $2$ by $- 2$ .

$5 x^{4} + 36 x^{3} - 18 x^{2} - 4 x + \frac{d}{d x} [10 x] + \frac{d}{d x} [- 1]$

Step 5

Evaluate $\frac{d}{d x} [10 x]$ .

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Step 5.1

Since $10$ is constant with respect to $x$ , the derivative of $10 x$ with respect to $x$ is $10 \frac{d}{d x} [x]$ .

$5 x^{4} + 36 x^{3} - 18 x^{2} - 4 x + 10 \frac{d}{d x} [x] + \frac{d}{d x} [- 1]$

Step 5.2

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

$5 x^{4} + 36 x^{3} - 18 x^{2} - 4 x + 10 \cdot 1 + \frac{d}{d x} [- 1]$

Step 5.3

Multiply $10$ by $1$ .

$5 x^{4} + 36 x^{3} - 18 x^{2} - 4 x + 10 + \frac{d}{d x} [- 1]$

Step 6

Differentiate using the Constant Rule.

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Step 6.1

Since $- 1$ is constant with respect to $x$ , the derivative of $- 1$ with respect to $x$ is $0$ .

$5 x^{4} + 36 x^{3} - 18 x^{2} - 4 x + 10 + 0$

Step 6.2

Add $5 x^{4} + 36 x^{3} - 18 x^{2} - 4 x + 10$ and $0$ .

$5 x^{4} + 36 x^{3} - 18 x^{2} - 4 x + 10$

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