Calculus Examples

$f (x) = (4 x^{2} - 3 x + 3) \cdot (4 x^{2} + 6 x - 11)$

Step 1

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 $f (x) = 4 x^{2} - 3 x + 3$ and $g (x) = 4 x^{2} + 6 x - 11$ .

$(4 x^{2} - 3 x + 3) \frac{d}{d x} [4 x^{2} + 6 x - 11] + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2

Differentiate.

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Step 2.1

By the Sum Rule, the derivative of $4 x^{2} + 6 x - 11$ with respect to $x$ is $\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [6 x] + \frac{d}{d x} [- 11]$ .

$(4 x^{2} - 3 x + 3) (\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [6 x] + \frac{d}{d x} [- 11]) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.2

Since $4$ is constant with respect to $x$ , the derivative of $4 x^{2}$ with respect to $x$ is $4 \frac{d}{d x} [x^{2}]$ .

$(4 x^{2} - 3 x + 3) (4 \frac{d}{d x} [x^{2}] + \frac{d}{d x} [6 x] + \frac{d}{d x} [- 11]) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.3

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

$(4 x^{2} - 3 x + 3) (4 (2 x) + \frac{d}{d x} [6 x] + \frac{d}{d x} [- 11]) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.4

Multiply $2$ by $4$ .

$(4 x^{2} - 3 x + 3) (8 x + \frac{d}{d x} [6 x] + \frac{d}{d x} [- 11]) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.5

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

$(4 x^{2} - 3 x + 3) (8 x + 6 \frac{d}{d x} [x] + \frac{d}{d x} [- 11]) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.6

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

$(4 x^{2} - 3 x + 3) (8 x + 6 \cdot 1 + \frac{d}{d x} [- 11]) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.7

Multiply $6$ by $1$ .

$(4 x^{2} - 3 x + 3) (8 x + 6 + \frac{d}{d x} [- 11]) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.8

Since $- 11$ is constant with respect to $x$ , the derivative of $- 11$ with respect to $x$ is $0$ .

$(4 x^{2} - 3 x + 3) (8 x + 6 + 0) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.9

Add $8 x + 6$ and $0$ .

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) \frac{d}{d x} [4 x^{2} - 3 x + 3]$

Step 2.10

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

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [- 3 x] + \frac{d}{d x} [3])$

Step 2.11

Since $4$ is constant with respect to $x$ , the derivative of $4 x^{2}$ with respect to $x$ is $4 \frac{d}{d x} [x^{2}]$ .

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (4 \frac{d}{d x} [x^{2}] + \frac{d}{d x} [- 3 x] + \frac{d}{d x} [3])$

Step 2.12

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

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (4 (2 x) + \frac{d}{d x} [- 3 x] + \frac{d}{d x} [3])$

Step 2.13

Multiply $2$ by $4$ .

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x + \frac{d}{d x} [- 3 x] + \frac{d}{d x} [3])$

Step 2.14

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

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3 \frac{d}{d x} [x] + \frac{d}{d x} [3])$

Step 2.15

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

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3 \cdot 1 + \frac{d}{d x} [3])$

Step 2.16

Multiply $- 3$ by $1$ .

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3 + \frac{d}{d x} [3])$

Step 2.17

Since $3$ is constant with respect to $x$ , the derivative of $3$ with respect to $x$ is $0$ .

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3 + 0)$

Step 2.18

Add $8 x - 3$ and $0$ .

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3

Simplify.

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Step 3.1

Factor $1$ out of $(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3)$ .

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Step 3.1.1

Factor $1$ out of $(4 x^{2} - 3 x + 3) (8 x + 6)$ .

$1 ((4 x^{2} - 3 x + 3) (8 x + 6)) + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.1.2

Factor $1$ out of $(4 x^{2} + 6 x - 11) (8 x - 3)$ .

$1 ((4 x^{2} - 3 x + 3) (8 x + 6)) + 1 ((4 x^{2} + 6 x - 11) (8 x - 3))$

Step 3.1.3

Factor $1$ out of $1 ((4 x^{2} - 3 x + 3) (8 x + 6)) + 1 ((4 x^{2} + 6 x - 11) (8 x - 3))$ .

$1 ((4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3))$

Step 3.2

Multiply $(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3)$ by $1$ .

$(4 x^{2} - 3 x + 3) (8 x + 6) + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3

Simplify each term.

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Step 3.3.1

Expand $(4 x^{2} - 3 x + 3) (8 x + 6)$ by multiplying each term in the first expression by each term in the second expression.

$4 x^{2} (8 x) + 4 x^{2} \cdot 6 - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2

Simplify each term.

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Step 3.3.2.1

Rewrite using the commutative property of multiplication.

$4 \cdot 8 x^{2} x + 4 x^{2} \cdot 6 - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.2

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 3.3.2.2.1

Move $x$ .

$4 \cdot 8 (x \cdot x^{2}) + 4 x^{2} \cdot 6 - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.2.2

Multiply $x$ by $x^{2}$ .

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Step 3.3.2.2.2.1

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

$4 \cdot 8 (x^{1} x^{2}) + 4 x^{2} \cdot 6 - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.2.2.2

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

$4 \cdot 8 x^{1 + 2} + 4 x^{2} \cdot 6 - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.2.3

Add $1$ and $2$ .

$4 \cdot 8 x^{3} + 4 x^{2} \cdot 6 - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.3

Multiply $4$ by $8$ .

$32 x^{3} + 4 x^{2} \cdot 6 - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.4

Multiply $6$ by $4$ .

$32 x^{3} + 24 x^{2} - 3 x (8 x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.5

Rewrite using the commutative property of multiplication.

$32 x^{3} + 24 x^{2} - 3 \cdot 8 x \cdot x - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.6

Multiply $x$ by $x$ by adding the exponents.

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Step 3.3.2.6.1

Move $x$ .

$32 x^{3} + 24 x^{2} - 3 \cdot 8 (x \cdot x) - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.6.2

Multiply $x$ by $x$ .

$32 x^{3} + 24 x^{2} - 3 \cdot 8 x^{2} - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.7

Multiply $- 3$ by $8$ .

$32 x^{3} + 24 x^{2} - 24 x^{2} - 3 x \cdot 6 + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.8

Multiply $6$ by $- 3$ .

$32 x^{3} + 24 x^{2} - 24 x^{2} - 18 x + 3 (8 x) + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.9

Multiply $8$ by $3$ .

$32 x^{3} + 24 x^{2} - 24 x^{2} - 18 x + 24 x + 3 \cdot 6 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.2.10

Multiply $3$ by $6$ .

$32 x^{3} + 24 x^{2} - 24 x^{2} - 18 x + 24 x + 18 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.3

Combine the opposite terms in $32 x^{3} + 24 x^{2} - 24 x^{2} - 18 x + 24 x + 18$ .

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Step 3.3.3.1

Subtract $24 x^{2}$ from $24 x^{2}$ .

$32 x^{3} + 0 - 18 x + 24 x + 18 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.3.2

Add $32 x^{3}$ and $0$ .

$32 x^{3} - 18 x + 24 x + 18 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.4

Add $- 18 x$ and $24 x$ .

$32 x^{3} + 6 x + 18 + (4 x^{2} + 6 x - 11) (8 x - 3)$

Step 3.3.5

Expand $(4 x^{2} + 6 x - 11) (8 x - 3)$ by multiplying each term in the first expression by each term in the second expression.

$32 x^{3} + 6 x + 18 + 4 x^{2} (8 x) + 4 x^{2} \cdot - 3 + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6

Simplify each term.

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Step 3.3.6.1

Rewrite using the commutative property of multiplication.

$32 x^{3} + 6 x + 18 + 4 \cdot 8 x^{2} x + 4 x^{2} \cdot - 3 + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.2

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 3.3.6.2.1

Move $x$ .

$32 x^{3} + 6 x + 18 + 4 \cdot 8 (x \cdot x^{2}) + 4 x^{2} \cdot - 3 + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.2.2

Multiply $x$ by $x^{2}$ .

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Step 3.3.6.2.2.1

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

$32 x^{3} + 6 x + 18 + 4 \cdot 8 (x^{1} x^{2}) + 4 x^{2} \cdot - 3 + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.2.2.2

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

$32 x^{3} + 6 x + 18 + 4 \cdot 8 x^{1 + 2} + 4 x^{2} \cdot - 3 + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.2.3

Add $1$ and $2$ .

$32 x^{3} + 6 x + 18 + 4 \cdot 8 x^{3} + 4 x^{2} \cdot - 3 + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.3

Multiply $4$ by $8$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} + 4 x^{2} \cdot - 3 + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.4

Multiply $- 3$ by $4$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 6 x (8 x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.5

Rewrite using the commutative property of multiplication.

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 6 \cdot 8 x \cdot x + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.6

Multiply $x$ by $x$ by adding the exponents.

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Step 3.3.6.6.1

Move $x$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 6 \cdot 8 (x \cdot x) + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.6.2

Multiply $x$ by $x$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 6 \cdot 8 x^{2} + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.7

Multiply $6$ by $8$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 48 x^{2} + 6 x \cdot - 3 - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.8

Multiply $- 3$ by $6$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 48 x^{2} - 18 x - 11 (8 x) - 11 \cdot - 3$

Step 3.3.6.9

Multiply $8$ by $- 11$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 48 x^{2} - 18 x - 88 x - 11 \cdot - 3$

Step 3.3.6.10

Multiply $- 11$ by $- 3$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} - 12 x^{2} + 48 x^{2} - 18 x - 88 x + 33$

Step 3.3.7

Add $- 12 x^{2}$ and $48 x^{2}$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} + 36 x^{2} - 18 x - 88 x + 33$

Step 3.3.8

Subtract $88 x$ from $- 18 x$ .

$32 x^{3} + 6 x + 18 + 32 x^{3} + 36 x^{2} - 106 x + 33$

Step 3.4

Add $32 x^{3}$ and $32 x^{3}$ .

$64 x^{3} + 6 x + 18 + 36 x^{2} - 106 x + 33$

Step 3.5

Subtract $106 x$ from $6 x$ .

$64 x^{3} - 100 x + 18 + 36 x^{2} + 33$

Step 3.6

Add $18$ and $33$ .

$64 x^{3} - 100 x + 36 x^{2} + 51$