Calculus Examples

$f (x) = a {(2 x^{3} + 5)}^{7}$

Step 1

Use the Binomial Theorem.

$\frac{d}{d a} [a ({(2 x^{3})}^{7} + 7 {(2 x^{3})}^{6} \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2

Simplify each term.

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Step 2.1

Apply the product rule to $2 x^{3}$ .

$\frac{d}{d a} [a (2^{7} {(x^{3})}^{7} + 7 {(2 x^{3})}^{6} \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.2

Raise $2$ to the power of $7$ .

$\frac{d}{d a} [a (128 {(x^{3})}^{7} + 7 {(2 x^{3})}^{6} \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.3

Multiply the exponents in ${(x^{3})}^{7}$ .

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Step 2.3.1

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

$\frac{d}{d a} [a (128 x^{3 \cdot 7} + 7 {(2 x^{3})}^{6} \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.3.2

Multiply $3$ by $7$ .

$\frac{d}{d a} [a (128 x^{21} + 7 {(2 x^{3})}^{6} \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.4

Apply the product rule to $2 x^{3}$ .

$\frac{d}{d a} [a (128 x^{21} + 7 (2^{6} {(x^{3})}^{6}) \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.5

Raise $2$ to the power of $6$ .

$\frac{d}{d a} [a (128 x^{21} + 7 (64 {(x^{3})}^{6}) \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.6

Multiply the exponents in ${(x^{3})}^{6}$ .

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Step 2.6.1

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

$\frac{d}{d a} [a (128 x^{21} + 7 (64 x^{3 \cdot 6}) \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.6.2

Multiply $3$ by $6$ .

$\frac{d}{d a} [a (128 x^{21} + 7 (64 x^{18}) \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.7

Multiply $64$ by $7$ .

$\frac{d}{d a} [a (128 x^{21} + 448 x^{18} \cdot 5 + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.8

Multiply $5$ by $448$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 21 {(2 x^{3})}^{5} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.9

Apply the product rule to $2 x^{3}$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 21 (2^{5} {(x^{3})}^{5}) \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.10

Raise $2$ to the power of $5$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 21 (32 {(x^{3})}^{5}) \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.11

Multiply the exponents in ${(x^{3})}^{5}$ .

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Step 2.11.1

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

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 21 (32 x^{3 \cdot 5}) \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.11.2

Multiply $3$ by $5$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 21 (32 x^{15}) \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.12

Multiply $32$ by $21$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 672 x^{15} \cdot 5^{2} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.13

Raise $5$ to the power of $2$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 672 x^{15} \cdot 25 + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.14

Multiply $25$ by $672$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 35 {(2 x^{3})}^{4} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.15

Apply the product rule to $2 x^{3}$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 35 (2^{4} {(x^{3})}^{4}) \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.16

Raise $2$ to the power of $4$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 35 (16 {(x^{3})}^{4}) \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.17

Multiply the exponents in ${(x^{3})}^{4}$ .

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Step 2.17.1

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

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 35 (16 x^{3 \cdot 4}) \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.17.2

Multiply $3$ by $4$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 35 (16 x^{12}) \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.18

Multiply $16$ by $35$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 560 x^{12} \cdot 5^{3} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.19

Raise $5$ to the power of $3$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 560 x^{12} \cdot 125 + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.20

Multiply $125$ by $560$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 35 {(2 x^{3})}^{3} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.21

Apply the product rule to $2 x^{3}$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 35 (2^{3} {(x^{3})}^{3}) \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.22

Raise $2$ to the power of $3$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 35 (8 {(x^{3})}^{3}) \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.23

Multiply the exponents in ${(x^{3})}^{3}$ .

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Step 2.23.1

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

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 35 (8 x^{3 \cdot 3}) \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.23.2

Multiply $3$ by $3$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 35 (8 x^{9}) \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.24

Multiply $8$ by $35$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 280 x^{9} \cdot 5^{4} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.25

Raise $5$ to the power of $4$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 280 x^{9} \cdot 625 + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.26

Multiply $625$ by $280$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 21 {(2 x^{3})}^{2} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.27

Apply the product rule to $2 x^{3}$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 21 (2^{2} {(x^{3})}^{2}) \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.28

Raise $2$ to the power of $2$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 21 (4 {(x^{3})}^{2}) \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.29

Multiply the exponents in ${(x^{3})}^{2}$ .

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Step 2.29.1

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

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 21 (4 x^{3 \cdot 2}) \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.29.2

Multiply $3$ by $2$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 21 (4 x^{6}) \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.30

Multiply $4$ by $21$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 84 x^{6} \cdot 5^{5} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.31

Raise $5$ to the power of $5$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 84 x^{6} \cdot 3125 + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.32

Multiply $3125$ by $84$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 7 (2 x^{3}) \cdot 5^{6} + 5^{7})]$

Step 2.33

Multiply $2$ by $7$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 14 x^{3} \cdot 5^{6} + 5^{7})]$

Step 2.34

Raise $5$ to the power of $6$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 14 x^{3} \cdot 15625 + 5^{7})]$

Step 2.35

Multiply $15625$ by $14$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 5^{7})]$

Step 2.36

Raise $5$ to the power of $7$ .

$\frac{d}{d a} [a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125)]$

Step 3

Since $128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125$ is constant with respect to $a$ , the derivative of $a (128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125)$ with respect to $a$ is $(128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125) \frac{d}{d a} [a]$ .

$(128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125) \frac{d}{d a} [a]$

Step 4

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

$(128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125) \cdot 1$

Step 5

Multiply $128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125$ by $1$ .

$128 x^{21} + 2240 x^{18} + 16800 x^{15} + 70000 x^{12} + 175000 x^{9} + 262500 x^{6} + 218750 x^{3} + 78125$