Calculus Examples

$\frac{- 2 t^{3} + 5 t^{2} - 4 t}{{(1 - t)}^{2}}$

Step 1

Differentiate using the Quotient Rule which states that $\frac{d}{d t} [\frac{f (t)}{g (t)}]$ is $\frac{g (t) \frac{d}{d t} [f (t)] - f (t) \frac{d}{d t} [g (t)]}{{g (t)}^{2}}$ where $f (t) = - 2 t^{3} + 5 t^{2} - 4 t$ and $g (t) = {(1 - t)}^{2}$ .

$\frac{{(1 - t)}^{2} \frac{d}{d t} [- 2 t^{3} + 5 t^{2} - 4 t] - (- 2 t^{3} + 5 t^{2} - 4 t) \frac{d}{d t} [{(1 - t)}^{2}]}{{({(1 - t)}^{2})}^{2}}$

Step 2

Differentiate.

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Step 2.1

Multiply the exponents in ${({(1 - t)}^{2})}^{2}$ .

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Step 2.1.1

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

$\frac{{(1 - t)}^{2} \frac{d}{d t} [- 2 t^{3} + 5 t^{2} - 4 t] - (- 2 t^{3} + 5 t^{2} - 4 t) \frac{d}{d t} [{(1 - t)}^{2}]}{{(1 - t)}^{2 \cdot 2}}$

Step 2.1.2

Multiply $2$ by $2$ .

$\frac{{(1 - t)}^{2} \frac{d}{d t} [- 2 t^{3} + 5 t^{2} - 4 t] - (- 2 t^{3} + 5 t^{2} - 4 t) \frac{d}{d t} [{(1 - t)}^{2}]}{{(1 - t)}^{4}}$

Step 2.2

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

$\frac{{(1 - t)}^{2} (\frac{d}{d t} [- 2 t^{3}] + \frac{d}{d t} [5 t^{2}] + \frac{d}{d t} [- 4 t]) - (- 2 t^{3} + 5 t^{2} - 4 t) \frac{d}{d t} [{(1 - t)}^{2}]}{{(1 - t)}^{4}}$

Step 2.3

Since $- 2$ is constant with respect to $t$ , the derivative of $- 2 t^{3}$ with respect to $t$ is $- 2 \frac{d}{d t} [t^{3}]$ .

$\frac{{(1 - t)}^{2} (- 2 \frac{d}{d t} [t^{3}] + \frac{d}{d t} [5 t^{2}] + \frac{d}{d t} [- 4 t]) - (- 2 t^{3} + 5 t^{2} - 4 t) \frac{d}{d t} [{(1 - t)}^{2}]}{{(1 - t)}^{4}}$

Step 2.4

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

$\frac{{(1 - t)}^{2} (- 2 (3 t^{2}) + \frac{d}{d t} [5 t^{2}] + \frac{d}{d t} [- 4 t]) - (- 2 t^{3} + 5 t^{2} - 4 t) \frac{d}{d t} [{(1 - t)}^{2}]}{{(1 - t)}^{4}}$

Step 2.5

Multiply $3$ by $- 2$ .

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

Step 2.6

Since $5$ is constant with respect to $t$ , the derivative of $5 t^{2}$ with respect to $t$ is $5 \frac{d}{d t} [t^{2}]$ .

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

Step 2.7

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

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

Step 2.8

Multiply $2$ by $5$ .

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

Step 2.9

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

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

Step 2.10

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

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

Step 2.11

Multiply $- 4$ by $1$ .

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

Step 3

Differentiate using the chain rule, which states that $\frac{d}{d t} [f (g (t))]$ is $f' (g (t)) g' (t)$ where $f (t) = t^{2}$ and $g (t) = 1 - t$ .

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Step 3.1

To apply the Chain Rule, set $u$ as $1 - t$ .

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

Step 3.2

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

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

Step 3.3

Replace all occurrences of $u$ with $1 - t$ .

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

Step 4

Simplify with factoring out.

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Step 4.1

Multiply $2$ by $- 1$ .

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

Step 4.2

Factor $1 - t$ out of ${(1 - t)}^{2} (- 6 t^{2} + 10 t - 4) - 2 (- 2 t^{3} + 5 t^{2} - 4 t) ((1 - t) \frac{d}{d t} [1 - t])$ .

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Step 4.2.1

Factor $1 - t$ out of ${(1 - t)}^{2} (- 6 t^{2} + 10 t - 4)$ .

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

Step 4.2.2

Factor $1 - t$ out of $- 2 (- 2 t^{3} + 5 t^{2} - 4 t) ((1 - t) \frac{d}{d t} [1 - t])$ .

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

Step 4.2.3

Factor $1 - t$ out of $(1 - t) ((1 - t) (- 6 t^{2} + 10 t - 4)) + (1 - t) (- 2 (- 2 t^{3} + 5 t^{2} - 4 t) (\frac{d}{d t} [1 - t]))$ .

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

Step 5

Cancel the common factors.

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Step 5.1

Factor $1 - t$ out of ${(1 - t)}^{4}$ .

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

Step 5.2

Cancel the common factor.

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

Step 5.3

Rewrite the expression.

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

Step 6

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

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

Step 7

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

$\frac{(1 - t) (- 6 t^{2} + 10 t - 4) - 2 (- 2 t^{3} + 5 t^{2} - 4 t) (0 + \frac{d}{d t} [- t])}{{(1 - t)}^{3}}$

Step 8

Add $0$ and $\frac{d}{d t} [- t]$ .

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

Step 9

Since $- 1$ is constant with respect to $t$ , the derivative of $- t$ with respect to $t$ is $- \frac{d}{d t} [t]$ .

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

Step 10

Multiply $- 1$ by $- 2$ .

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

Step 11

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

$\frac{(1 - t) (- 6 t^{2} + 10 t - 4) + 2 (- 2 t^{3} + 5 t^{2} - 4 t) \cdot 1}{{(1 - t)}^{3}}$

Step 12

Multiply $2$ by $1$ .

$\frac{(1 - t) (- 6 t^{2} + 10 t - 4) + 2 (- 2 t^{3} + 5 t^{2} - 4 t)}{{(1 - t)}^{3}}$

Step 13

Simplify.

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Step 13.1

Apply the distributive property.

$\frac{(1 - t) (- 6 t^{2} + 10 t - 4) + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2

Simplify the numerator.

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Step 13.2.1

Simplify each term.

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Step 13.2.1.1

Expand $(1 - t) (- 6 t^{2} + 10 t - 4)$ by multiplying each term in the first expression by each term in the second expression.

$\frac{1 (- 6 t^{2}) + 1 (10 t) + 1 \cdot - 4 - t (- 6 t^{2}) - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2

Simplify each term.

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Step 13.2.1.2.1

Multiply $- 6 t^{2}$ by $1$ .

$\frac{- 6 t^{2} + 1 (10 t) + 1 \cdot - 4 - t (- 6 t^{2}) - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.2

Multiply $10 t$ by $1$ .

$\frac{- 6 t^{2} + 10 t + 1 \cdot - 4 - t (- 6 t^{2}) - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.3

Multiply $- 4$ by $1$ .

$\frac{- 6 t^{2} + 10 t - 4 - t (- 6 t^{2}) - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.4

Rewrite using the commutative property of multiplication.

$\frac{- 6 t^{2} + 10 t - 4 - 1 \cdot - 6 t \cdot t^{2} - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.5

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

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Step 13.2.1.2.5.1

Move $t^{2}$ .

$\frac{- 6 t^{2} + 10 t - 4 - 1 \cdot - 6 (t^{2} t) - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.5.2

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

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Step 13.2.1.2.5.2.1

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

$\frac{- 6 t^{2} + 10 t - 4 - 1 \cdot - 6 (t^{2} t^{1}) - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.5.2.2

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

$\frac{- 6 t^{2} + 10 t - 4 - 1 \cdot - 6 t^{2 + 1} - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.5.3

Add $2$ and $1$ .

$\frac{- 6 t^{2} + 10 t - 4 - 1 \cdot - 6 t^{3} - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.6

Multiply $- 1$ by $- 6$ .

$\frac{- 6 t^{2} + 10 t - 4 + 6 t^{3} - t (10 t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.7

Rewrite using the commutative property of multiplication.

$\frac{- 6 t^{2} + 10 t - 4 + 6 t^{3} - 1 \cdot 10 t \cdot t - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.8

Multiply $t$ by $t$ by adding the exponents.

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Step 13.2.1.2.8.1

Move $t$ .

$\frac{- 6 t^{2} + 10 t - 4 + 6 t^{3} - 1 \cdot 10 (t \cdot t) - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.8.2

Multiply $t$ by $t$ .

$\frac{- 6 t^{2} + 10 t - 4 + 6 t^{3} - 1 \cdot 10 t^{2} - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.9

Multiply $- 1$ by $10$ .

$\frac{- 6 t^{2} + 10 t - 4 + 6 t^{3} - 10 t^{2} - t \cdot - 4 + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.2.10

Multiply $- 4$ by $- 1$ .

$\frac{- 6 t^{2} + 10 t - 4 + 6 t^{3} - 10 t^{2} + 4 t + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.3

Subtract $10 t^{2}$ from $- 6 t^{2}$ .

$\frac{- 16 t^{2} + 10 t - 4 + 6 t^{3} + 4 t + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.4

Add $10 t$ and $4 t$ .

$\frac{- 16 t^{2} + 14 t - 4 + 6 t^{3} + 2 (- 2 t^{3}) + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.5

Multiply $- 2$ by $2$ .

$\frac{- 16 t^{2} + 14 t - 4 + 6 t^{3} - 4 t^{3} + 2 (5 t^{2}) + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.6

Multiply $5$ by $2$ .

$\frac{- 16 t^{2} + 14 t - 4 + 6 t^{3} - 4 t^{3} + 10 t^{2} + 2 (- 4 t)}{{(1 - t)}^{3}}$

Step 13.2.1.7

Multiply $- 4$ by $2$ .

$\frac{- 16 t^{2} + 14 t - 4 + 6 t^{3} - 4 t^{3} + 10 t^{2} - 8 t}{{(1 - t)}^{3}}$

Step 13.2.2

Add $- 16 t^{2}$ and $10 t^{2}$ .

$\frac{- 6 t^{2} + 14 t - 4 + 6 t^{3} - 4 t^{3} - 8 t}{{(1 - t)}^{3}}$

Step 13.2.3

Subtract $8 t$ from $14 t$ .

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

Step 13.2.4

Subtract $4 t^{3}$ from $6 t^{3}$ .

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

Step 13.3

Reorder terms.

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

Step 13.4

Factor $2$ out of $2 t^{3} - 6 t^{2} + 6 t - 4$ .

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Step 13.4.1

Factor $2$ out of $2 t^{3}$ .

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

Step 13.4.2

Factor $2$ out of $- 6 t^{2}$ .

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

Step 13.4.3

Factor $2$ out of $6 t$ .

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

Step 13.4.4

Factor $2$ out of $- 4$ .

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

Step 13.4.5

Factor $2$ out of $2 t^{3} + 2 (- 3 t^{2})$ .

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

Step 13.4.6

Factor $2$ out of $2 (t^{3} - 3 t^{2}) + 2 (3 t)$ .

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

Step 13.4.7

Factor $2$ out of $2 (t^{3} - 3 t^{2} + 3 t) + 2 \cdot - 2$ .

$\frac{2 (t^{3} - 3 t^{2} + 3 t - 2)}{{(- t + 1)}^{3}}$