Calculus Examples

$(3 t - 1) {(6 t - 4)}^{- 1}$

Step 1

Differentiate using the Product Rule which states that $\frac{d}{d t} [f (t) g (t)]$ is $f (t) \frac{d}{d t} [g (t)] + g (t) \frac{d}{d t} [f (t)]$ where $f (t) = 3 t - 1$ and $g (t) = {(6 t - 4)}^{- 1}$ .

$(3 t - 1) \frac{d}{d t} [{(6 t - 4)}^{- 1}] + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 2

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{- 1}$ and $g (t) = 6 t - 4$ .

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Step 2.1

To apply the Chain Rule, set $u$ as $6 t - 4$ .

$(3 t - 1) (\frac{d}{d u} [u^{- 1}] \frac{d}{d t} [6 t - 4]) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 2.2

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

$(3 t - 1) (- u^{- 2} \frac{d}{d t} [6 t - 4]) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 2.3

Replace all occurrences of $u$ with $6 t - 4$ .

$(3 t - 1) (- {(6 t - 4)}^{- 2} \frac{d}{d t} [6 t - 4]) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 3

Differentiate.

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Step 3.1

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

$(3 t - 1) (- {(6 t - 4)}^{- 2} (\frac{d}{d t} [6 t] + \frac{d}{d t} [- 4])) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 3.2

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

$(3 t - 1) (- {(6 t - 4)}^{- 2} (6 \frac{d}{d t} [t] + \frac{d}{d t} [- 4])) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 3.3

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

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

Step 3.4

Multiply $6$ by $1$ .

$(3 t - 1) (- {(6 t - 4)}^{- 2} (6 + \frac{d}{d t} [- 4])) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 3.5

Since $- 4$ is constant with respect to $t$ , the derivative of $- 4$ with respect to $t$ is $0$ .

$(3 t - 1) (- {(6 t - 4)}^{- 2} (6 + 0)) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 3.6

Simplify the expression.

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Step 3.6.1

Add $6$ and $0$ .

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

Step 3.6.2

Multiply $6$ by $- 1$ .

$(3 t - 1) (- 6 {(6 t - 4)}^{- 2}) + {(6 t - 4)}^{- 1} \frac{d}{d t} [3 t - 1]$

Step 3.7

By the Sum Rule, the derivative of $3 t - 1$ with respect to $t$ is $\frac{d}{d t} [3 t] + \frac{d}{d t} [- 1]$ .

$(3 t - 1) (- 6 {(6 t - 4)}^{- 2}) + {(6 t - 4)}^{- 1} (\frac{d}{d t} [3 t] + \frac{d}{d t} [- 1])$

Step 3.8

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

$(3 t - 1) (- 6 {(6 t - 4)}^{- 2}) + {(6 t - 4)}^{- 1} (3 \frac{d}{d t} [t] + \frac{d}{d t} [- 1])$

Step 3.9

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

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

Step 3.10

Multiply $3$ by $1$ .

$(3 t - 1) (- 6 {(6 t - 4)}^{- 2}) + {(6 t - 4)}^{- 1} (3 + \frac{d}{d t} [- 1])$

Step 3.11

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

$(3 t - 1) (- 6 {(6 t - 4)}^{- 2}) + {(6 t - 4)}^{- 1} (3 + 0)$

Step 3.12

Simplify the expression.

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Step 3.12.1

Add $3$ and $0$ .

$(3 t - 1) (- 6 {(6 t - 4)}^{- 2}) + {(6 t - 4)}^{- 1} \cdot 3$

Step 3.12.2

Move $3$ to the left of ${(6 t - 4)}^{- 1}$ .

$(3 t - 1) (- 6 {(6 t - 4)}^{- 2}) + 3 \cdot {(6 t - 4)}^{- 1}$

Step 3.12.3

Reorder terms.

$- 6 {(6 t - 4)}^{- 2} (3 t - 1) + 3 {(6 t - 4)}^{- 1}$