Calculus Examples

$(10 + 0.2 t + 0.01 t^{2}) (6000 + 500 t + 10 t^{2})$

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 $f (t) = 10 + 0.2 t + 0.01 t^{2}$ and $g (t) = 6000 + 500 t + 10 t^{2}$ .

$(10 + 0.2 t + 0.01 t^{2}) \frac{d}{d t} [6000 + 500 t + 10 t^{2}] + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2

Differentiate.

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Step 2.1

By the Sum Rule, the derivative of $6000 + 500 t + 10 t^{2}$ with respect to $t$ is $\frac{d}{d t} [6000] + \frac{d}{d t} [500 t] + \frac{d}{d t} [10 t^{2}]$ .

$(10 + 0.2 t + 0.01 t^{2}) (\frac{d}{d t} [6000] + \frac{d}{d t} [500 t] + \frac{d}{d t} [10 t^{2}]) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.2

Since $6000$ is constant with respect to $t$ , the derivative of $6000$ with respect to $t$ is $0$ .

$(10 + 0.2 t + 0.01 t^{2}) (0 + \frac{d}{d t} [500 t] + \frac{d}{d t} [10 t^{2}]) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.3

Add $0$ and $\frac{d}{d t} [500 t]$ .

$(10 + 0.2 t + 0.01 t^{2}) (\frac{d}{d t} [500 t] + \frac{d}{d t} [10 t^{2}]) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.4

Since $500$ is constant with respect to $t$ , the derivative of $500 t$ with respect to $t$ is $500 \frac{d}{d t} [t]$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 \frac{d}{d t} [t] + \frac{d}{d t} [10 t^{2}]) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.5

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

$(10 + 0.2 t + 0.01 t^{2}) (500 \cdot 1 + \frac{d}{d t} [10 t^{2}]) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.6

Multiply $500$ by $1$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + \frac{d}{d t} [10 t^{2}]) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.7

Since $10$ is constant with respect to $t$ , the derivative of $10 t^{2}$ with respect to $t$ is $10 \frac{d}{d t} [t^{2}]$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 10 \frac{d}{d t} [t^{2}]) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.8

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

$(10 + 0.2 t + 0.01 t^{2}) (500 + 10 (2 t)) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.9

Multiply $2$ by $10$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) \frac{d}{d t} [10 + 0.2 t + 0.01 t^{2}]$

Step 2.10

By the Sum Rule, the derivative of $10 + 0.2 t + 0.01 t^{2}$ with respect to $t$ is $\frac{d}{d t} [10] + \frac{d}{d t} [0.2 t] + \frac{d}{d t} [0.01 t^{2}]$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (\frac{d}{d t} [10] + \frac{d}{d t} [0.2 t] + \frac{d}{d t} [0.01 t^{2}])$

Step 2.11

Since $10$ is constant with respect to $t$ , the derivative of $10$ with respect to $t$ is $0$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0 + \frac{d}{d t} [0.2 t] + \frac{d}{d t} [0.01 t^{2}])$

Step 2.12

Add $0$ and $\frac{d}{d t} [0.2 t]$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (\frac{d}{d t} [0.2 t] + \frac{d}{d t} [0.01 t^{2}])$

Step 2.13

Since $0.2$ is constant with respect to $t$ , the derivative of $0.2 t$ with respect to $t$ is $0.2 \frac{d}{d t} [t]$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 \frac{d}{d t} [t] + \frac{d}{d t} [0.01 t^{2}])$

Step 2.14

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

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 \cdot 1 + \frac{d}{d t} [0.01 t^{2}])$

Step 2.15

Multiply $0.2$ by $1$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + \frac{d}{d t} [0.01 t^{2}])$

Step 2.16

Since $0.01$ is constant with respect to $t$ , the derivative of $0.01 t^{2}$ with respect to $t$ is $0.01 \frac{d}{d t} [t^{2}]$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.01 \frac{d}{d t} [t^{2}])$

Step 2.17

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

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.01 (2 t))$

Step 2.18

Multiply $2$ by $0.01$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t)$

Step 3

Simplify.

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Step 3.1

Factor $1$ out of $(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t)$ .

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Step 3.1.1

Factor $1$ out of $(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t)$ .

$1 ((10 + 0.2 t + 0.01 t^{2}) (500 + 20 t)) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t)$

Step 3.1.2

Factor $1$ out of $(6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t)$ .

$1 ((10 + 0.2 t + 0.01 t^{2}) (500 + 20 t)) + 1 ((6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t))$

Step 3.1.3

Factor $1$ out of $1 ((10 + 0.2 t + 0.01 t^{2}) (500 + 20 t)) + 1 ((6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t))$ .

$1 ((10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t))$

Step 3.2

Multiply $(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t)$ by $1$ .

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (6000 + 500 t + 10 t^{2}) (0.2 + 0.02 t)$

Step 3.3

Reorder terms.

$(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4

Simplify each term.

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Step 3.4.1

Expand $(10 + 0.2 t + 0.01 t^{2}) (500 + 20 t)$ by multiplying each term in the first expression by each term in the second expression.

$10 \cdot 500 + 10 (20 t) + 0.2 t \cdot 500 + 0.2 t (20 t) + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2

Simplify each term.

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Step 3.4.2.1

Multiply $10$ by $500$ .

$5000 + 10 (20 t) + 0.2 t \cdot 500 + 0.2 t (20 t) + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.2

Multiply $20$ by $10$ .

$5000 + 200 t + 0.2 t \cdot 500 + 0.2 t (20 t) + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.3

Multiply $500$ by $0.2$ .

$5000 + 200 t + 100 t + 0.2 t (20 t) + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.4

Rewrite using the commutative property of multiplication.

$5000 + 200 t + 100 t + 0.2 \cdot 20 t \cdot t + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.5

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

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Step 3.4.2.5.1

Move $t$ .

$5000 + 200 t + 100 t + 0.2 \cdot 20 (t \cdot t) + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.5.2

Multiply $t$ by $t$ .

$5000 + 200 t + 100 t + 0.2 \cdot 20 t^{2} + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.6

Multiply $0.2$ by $20$ .

$5000 + 200 t + 100 t + 4 t^{2} + 0.01 t^{2} \cdot 500 + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.7

Multiply $500$ by $0.01$ .

$5000 + 200 t + 100 t + 4 t^{2} + 5 t^{2} + 0.01 t^{2} (20 t) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.8

Rewrite using the commutative property of multiplication.

$5000 + 200 t + 100 t + 4 t^{2} + 5 t^{2} + 0.01 \cdot 20 t^{2} t + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.9

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

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Step 3.4.2.9.1

Move $t$ .

$5000 + 200 t + 100 t + 4 t^{2} + 5 t^{2} + 0.01 \cdot 20 (t \cdot t^{2}) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.9.2

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

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Step 3.4.2.9.2.1

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

$5000 + 200 t + 100 t + 4 t^{2} + 5 t^{2} + 0.01 \cdot 20 (t^{1} t^{2}) + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.9.2.2

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

$5000 + 200 t + 100 t + 4 t^{2} + 5 t^{2} + 0.01 \cdot 20 t^{1 + 2} + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.9.3

Add $1$ and $2$ .

$5000 + 200 t + 100 t + 4 t^{2} + 5 t^{2} + 0.01 \cdot 20 t^{3} + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.2.10

Multiply $0.01$ by $20$ .

$5000 + 200 t + 100 t + 4 t^{2} + 5 t^{2} + 0.2 t^{3} + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.3

Add $200 t$ and $100 t$ .

$5000 + 300 t + 4 t^{2} + 5 t^{2} + 0.2 t^{3} + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.4

Add $4 t^{2}$ and $5 t^{2}$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + (0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$

Step 3.4.5

Expand $(0.2 + 0.02 t) (6000 + 500 t + 10 t^{2})$ by multiplying each term in the first expression by each term in the second expression.

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 0.2 \cdot 6000 + 0.2 (500 t) + 0.2 (10 t^{2}) + 0.02 t \cdot 6000 + 0.02 t (500 t) + 0.02 t (10 t^{2})$

Step 3.4.6

Simplify each term.

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Step 3.4.6.1

Multiply $0.2$ by $6000$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 0.2 (500 t) + 0.2 (10 t^{2}) + 0.02 t \cdot 6000 + 0.02 t (500 t) + 0.02 t (10 t^{2})$

Step 3.4.6.2

Multiply $500$ by $0.2$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 0.2 (10 t^{2}) + 0.02 t \cdot 6000 + 0.02 t (500 t) + 0.02 t (10 t^{2})$

Step 3.4.6.3

Multiply $10$ by $0.2$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 0.02 t \cdot 6000 + 0.02 t (500 t) + 0.02 t (10 t^{2})$

Step 3.4.6.4

Multiply $6000$ by $0.02$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 0.02 t (500 t) + 0.02 t (10 t^{2})$

Step 3.4.6.5

Rewrite using the commutative property of multiplication.

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 0.02 \cdot 500 t \cdot t + 0.02 t (10 t^{2})$

Step 3.4.6.6

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

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Step 3.4.6.6.1

Move $t$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 0.02 \cdot 500 (t \cdot t) + 0.02 t (10 t^{2})$

Step 3.4.6.6.2

Multiply $t$ by $t$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 0.02 \cdot 500 t^{2} + 0.02 t (10 t^{2})$

Step 3.4.6.7

Multiply $0.02$ by $500$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 10 t^{2} + 0.02 t (10 t^{2})$

Step 3.4.6.8

Rewrite using the commutative property of multiplication.

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 10 t^{2} + 0.02 \cdot 10 t \cdot t^{2}$

Step 3.4.6.9

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

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Step 3.4.6.9.1

Move $t^{2}$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 10 t^{2} + 0.02 \cdot 10 (t^{2} t)$

Step 3.4.6.9.2

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

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Step 3.4.6.9.2.1

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

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 10 t^{2} + 0.02 \cdot 10 (t^{2} t^{1})$

Step 3.4.6.9.2.2

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

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 10 t^{2} + 0.02 \cdot 10 t^{2 + 1}$

Step 3.4.6.9.3

Add $2$ and $1$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 10 t^{2} + 0.02 \cdot 10 t^{3}$

Step 3.4.6.10

Multiply $0.02$ by $10$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 100 t + 2 t^{2} + 120 t + 10 t^{2} + 0.2 t^{3}$

Step 3.4.7

Add $100 t$ and $120 t$ .

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 2 t^{2} + 220 t + 10 t^{2} + 0.2 t^{3}$

Step 3.4.8

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

$5000 + 300 t + 9 t^{2} + 0.2 t^{3} + 1200 + 12 t^{2} + 220 t + 0.2 t^{3}$

Step 3.5

Add $5000$ and $1200$ .

$300 t + 9 t^{2} + 0.2 t^{3} + 6200 + 12 t^{2} + 220 t + 0.2 t^{3}$

Step 3.6

Add $300 t$ and $220 t$ .

$9 t^{2} + 0.2 t^{3} + 6200 + 12 t^{2} + 520 t + 0.2 t^{3}$

Step 3.7

Add $9 t^{2}$ and $12 t^{2}$ .

$21 t^{2} + 0.2 t^{3} + 6200 + 520 t + 0.2 t^{3}$

Step 3.8

Add $0.2 t^{3}$ and $0.2 t^{3}$ .

$21 t^{2} + 0.4 t^{3} + 6200 + 520 t$