Calculus Examples

${(3.1 x - 6)}^{2} - \frac{1}{{(3.1 x - 6)}^{2}}$

Step 1

Rewrite ${(3.1 x - 6)}^{2}$ as $(3.1 x - 6) (3.1 x - 6)$ .

$\frac{d}{d x} [(3.1 x - 6) (3.1 x - 6) - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 2

Expand $(3.1 x - 6) (3.1 x - 6)$ using the FOIL Method.

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Step 2.1

Apply the distributive property.

$\frac{d}{d x} [3.1 x (3.1 x - 6) - 6 (3.1 x - 6) - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 2.2

Apply the distributive property.

$\frac{d}{d x} [3.1 x (3.1 x) + 3.1 x \cdot - 6 - 6 (3.1 x - 6) - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 2.3

Apply the distributive property.

$\frac{d}{d x} [3.1 x (3.1 x) + 3.1 x \cdot - 6 - 6 (3.1 x) - 6 \cdot - 6 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3

Simplify and combine like terms.

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Step 3.1

Simplify each term.

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Step 3.1.1

Rewrite using the commutative property of multiplication.

$\frac{d}{d x} [3.1 \cdot 3.1 x \cdot x + 3.1 x \cdot - 6 - 6 (3.1 x) - 6 \cdot - 6 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3.1.2

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

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Step 3.1.2.1

Move $x$ .

$\frac{d}{d x} [3.1 \cdot 3.1 (x \cdot x) + 3.1 x \cdot - 6 - 6 (3.1 x) - 6 \cdot - 6 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3.1.2.2

Multiply $x$ by $x$ .

$\frac{d}{d x} [3.1 \cdot 3.1 x^{2} + 3.1 x \cdot - 6 - 6 (3.1 x) - 6 \cdot - 6 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3.1.3

Multiply $3.1$ by $3.1$ .

$\frac{d}{d x} [9.61 x^{2} + 3.1 x \cdot - 6 - 6 (3.1 x) - 6 \cdot - 6 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3.1.4

Multiply $- 6$ by $3.1$ .

$\frac{d}{d x} [9.61 x^{2} - 18.6 x - 6 (3.1 x) - 6 \cdot - 6 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3.1.5

Multiply $3.1$ by $- 6$ .

$\frac{d}{d x} [9.61 x^{2} - 18.6 x - 18.6 x - 6 \cdot - 6 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3.1.6

Multiply $- 6$ by $- 6$ .

$\frac{d}{d x} [9.61 x^{2} - 18.6 x - 18.6 x + 36 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 3.2

Subtract $18.6 x$ from $- 18.6 x$ .

$\frac{d}{d x} [9.61 x^{2} - 37.2 x + 36 - \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 4

By the Sum Rule, the derivative of $9.61 x^{2} - 37.2 x + 36 - \frac{1}{{(3.1 x - 6)}^{2}}$ with respect to $x$ is $\frac{d}{d x} [9.61 x^{2}] + \frac{d}{d x} [- 37.2 x] + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$ .

$\frac{d}{d x} [9.61 x^{2}] + \frac{d}{d x} [- 37.2 x] + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 5

Evaluate $\frac{d}{d x} [9.61 x^{2}]$ .

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Step 5.1

Since $9.61$ is constant with respect to $x$ , the derivative of $9.61 x^{2}$ with respect to $x$ is $9.61 \frac{d}{d x} [x^{2}]$ .

$9.61 \frac{d}{d x} [x^{2}] + \frac{d}{d x} [- 37.2 x] + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 5.2

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

$9.61 (2 x) + \frac{d}{d x} [- 37.2 x] + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 5.3

Multiply $2$ by $9.61$ .

$19.22 x + \frac{d}{d x} [- 37.2 x] + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 6

Evaluate $\frac{d}{d x} [- 37.2 x]$ .

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Step 6.1

Since $- 37.2$ is constant with respect to $x$ , the derivative of $- 37.2 x$ with respect to $x$ is $- 37.2 \frac{d}{d x} [x]$ .

$19.22 x - 37.2 \frac{d}{d x} [x] + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 6.2

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

$19.22 x - 37.2 \cdot 1 + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 6.3

Multiply $- 37.2$ by $1$ .

$19.22 x - 37.2 + \frac{d}{d x} [36] + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 7

Since $36$ is constant with respect to $x$ , the derivative of $36$ with respect to $x$ is $0$ .

$19.22 x - 37.2 + 0 + \frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$

Step 8

Evaluate $\frac{d}{d x} [- \frac{1}{{(3.1 x - 6)}^{2}}]$ .

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Step 8.1

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 $f (x) = - 1$ and $g (x) = \frac{1}{{(3.1 x - 6)}^{2}}$ .

$19.22 x - 37.2 + 0 - \frac{d}{d x} [\frac{1}{{(3.1 x - 6)}^{2}}] + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.2

Rewrite $\frac{1}{{(3.1 x - 6)}^{2}}$ as ${({(3.1 x - 6)}^{2})}^{- 1}$ .

$19.22 x - 37.2 + 0 - \frac{d}{d x} [{({(3.1 x - 6)}^{2})}^{- 1}] + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.3

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{- 1}$ and $g (x) = {(3.1 x - 6)}^{2}$ .

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Step 8.3.1

To apply the Chain Rule, set $u_{1}$ as ${(3.1 x - 6)}^{2}$ .

$19.22 x - 37.2 + 0 - (\frac{d}{d u_{1}} [{u_{1}}^{- 1}] \frac{d}{d x} [{(3.1 x - 6)}^{2}]) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.3.2

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

$19.22 x - 37.2 + 0 - (- {u_{1}}^{- 2} \frac{d}{d x} [{(3.1 x - 6)}^{2}]) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.3.3

Replace all occurrences of $u_{1}$ with ${(3.1 x - 6)}^{2}$ .

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} \frac{d}{d x} [{(3.1 x - 6)}^{2}]) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{2}$ and $g (x) = 3.1 x - 6$ .

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Step 8.4.1

To apply the Chain Rule, set $u_{2}$ as $3.1 x - 6$ .

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (\frac{d}{d u_{2}} [{u_{2}}^{2}] \frac{d}{d x} [3.1 x - 6])) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.4.2

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

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (2 u_{2} \frac{d}{d x} [3.1 x - 6])) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.4.3

Replace all occurrences of $u_{2}$ with $3.1 x - 6$ .

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (2 (3.1 x - 6) \frac{d}{d x} [3.1 x - 6])) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.5

By the Sum Rule, the derivative of $3.1 x - 6$ with respect to $x$ is $\frac{d}{d x} [3.1 x] + \frac{d}{d x} [- 6]$ .

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (2 (3.1 x - 6) (\frac{d}{d x} [3.1 x] + \frac{d}{d x} [- 6]))) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.6

Since $3.1$ is constant with respect to $x$ , the derivative of $3.1 x$ with respect to $x$ is $3.1 \frac{d}{d x} [x]$ .

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (2 (3.1 x - 6) (3.1 \frac{d}{d x} [x] + \frac{d}{d x} [- 6]))) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.7

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

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (2 (3.1 x - 6) (3.1 \cdot 1 + \frac{d}{d x} [- 6]))) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.8

Since $- 6$ is constant with respect to $x$ , the derivative of $- 6$ with respect to $x$ is $0$ .

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (2 (3.1 x - 6) (3.1 \cdot 1 + 0))) + \frac{1}{{(3.1 x - 6)}^{2}} \frac{d}{d x} [- 1]$

Step 8.9

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

$19.22 x - 37.2 + 0 - (- {({(3.1 x - 6)}^{2})}^{- 2} (2 (3.1 x - 6) (3.1 \cdot 1 + 0))) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.10

Multiply the exponents in ${({(3.1 x - 6)}^{2})}^{- 2}$ .

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Step 8.10.1

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

$19.22 x - 37.2 + 0 - (- {(3.1 x - 6)}^{2 \cdot - 2} (2 (3.1 x - 6) (3.1 \cdot 1 + 0))) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.10.2

Multiply $2$ by $- 2$ .

$19.22 x - 37.2 + 0 - (- {(3.1 x - 6)}^{- 4} (2 (3.1 x - 6) (3.1 \cdot 1 + 0))) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.11

Multiply $3.1$ by $1$ .

$19.22 x - 37.2 + 0 - (- {(3.1 x - 6)}^{- 4} (2 (3.1 x - 6) (3.1 + 0))) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.12

Add $3.1$ and $0$ .

$19.22 x - 37.2 + 0 - (- {(3.1 x - 6)}^{- 4} (2 (3.1 x - 6) \cdot 3.1)) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.13

Multiply $3.1$ by $2$ .

$19.22 x - 37.2 + 0 - (- {(3.1 x - 6)}^{- 4} (6.2 (3.1 x - 6))) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.14

Multiply $6.2$ by $- 1$ .

$19.22 x - 37.2 + 0 - (- 6.2 {(3.1 x - 6)}^{- 4} (3.1 x - 6)) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.15

Raise $3.1 x - 6$ to the power of $1$ .

$19.22 x - 37.2 + 0 - (- 6.2 ({(3.1 x - 6)}^{1} {(3.1 x - 6)}^{- 4})) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.16

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

$19.22 x - 37.2 + 0 - (- 6.2 {(3.1 x - 6)}^{1 - 4}) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.17

Subtract $4$ from $1$ .

$19.22 x - 37.2 + 0 - (- 6.2 {(3.1 x - 6)}^{- 3}) + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.18

Multiply $- 6.2$ by $- 1$ .

$19.22 x - 37.2 + 0 + 6.2 {(3.1 x - 6)}^{- 3} + \frac{1}{{(3.1 x - 6)}^{2}} \cdot 0$

Step 8.19

Multiply $\frac{1}{{(3.1 x - 6)}^{2}}$ by $0$ .

$19.22 x - 37.2 + 0 + 6.2 {(3.1 x - 6)}^{- 3} + 0$

Step 8.20

Add $6.2 {(3.1 x - 6)}^{- 3}$ and $0$ .

$19.22 x - 37.2 + 0 + 6.2 {(3.1 x - 6)}^{- 3}$

Step 9

Simplify.

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Step 9.1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$19.22 x - 37.2 + 0 + 6.2 \frac{1}{{(3.1 x - 6)}^{3}}$

Step 9.2

Combine terms.

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Step 9.2.1

Add $19.22 x - 37.2$ and $0$ .

$19.22 x - 37.2 + 6.2 \frac{1}{{(3.1 x - 6)}^{3}}$

Step 9.2.2

Combine $6.2$ and $\frac{1}{{(3.1 x - 6)}^{3}}$ .

$19.22 x - 37.2 + \frac{6.2}{{(3.1 x - 6)}^{3}}$

Step 9.3

Reorder terms.

$19.22 x + \frac{6.2}{{(3.1 x - 6)}^{3}} - 37.2$

Step 9.4

Simplify each term.

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Step 9.4.1

Simplify the denominator.

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Step 9.4.1.1

Factor $0.1$ out of $3.1 x - 6$ .

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Step 9.4.1.1.1

Factor $0.1$ out of $3.1 x$ .

$19.22 x + \frac{6.2}{{(0.1 (31 x) - 6)}^{3}} - 37.2$

Step 9.4.1.1.2

Factor $0.1$ out of $- 6$ .

$19.22 x + \frac{6.2}{{(0.1 (31 x) + 0.1 (- 60))}^{3}} - 37.2$

Step 9.4.1.1.3

Factor $0.1$ out of $0.1 (31 x) + 0.1 (- 60)$ .

$19.22 x + \frac{6.2}{{(0.1 (31 x - 60))}^{3}} - 37.2$

Step 9.4.1.2

Apply the product rule to $0.1 (31 x - 60)$ .

$19.22 x + \frac{6.2}{{0.1}^{3} {(31 x - 60)}^{3}} - 37.2$

Step 9.4.1.3

Raise $0.1$ to the power of $3$ .

$19.22 x + \frac{6.2}{0.001 {(31 x - 60)}^{3}} - 37.2$

Step 9.4.2

Factor $6.2$ out of $6.2$ .

$19.22 x + \frac{6.2 (1)}{0.001 {(31 x - 60)}^{3}} - 37.2$

Step 9.4.3

Factor $0.001$ out of $0.001 {(31 x - 60)}^{3}$ .

$19.22 x + \frac{6.2 (1)}{0.001 ({(31 x - 60)}^{3})} - 37.2$

Step 9.4.4

Separate fractions.

$19.22 x + \frac{6.2}{0.001} \cdot \frac{1}{{(31 x - 60)}^{3}} - 37.2$

Step 9.4.5

Divide $6.2$ by $0.001$ .

$19.22 x + 6200 \frac{1}{{(31 x - 60)}^{3}} - 37.2$

Step 9.4.6

Combine $6200$ and $\frac{1}{{(31 x - 60)}^{3}}$ .

$19.22 x + \frac{6200}{{(31 x - 60)}^{3}} - 37.2$