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Calculus 2 : Indefinite Integrals

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Example Questions

Example Question #469 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{(5sin(x + 12))}{43})dx\end{align*}$

Possible Answers:

$-\frac{(720cos(x + 12))}{43}+C$

$-\frac{(5cos(x + 12))}{43}+C$

$-\frac{(720cos(x + 12))}{43}$

$-\frac{(5cos(x + 12))}{43}$

Correct answer:

$-\frac{(5cos(x + 12))}{43}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, familiarity with derivative rules}\\&\text{can prove useful. After all, an integral is essentially the}\\&\text{opposite operation of a derivative. Consider how in a derivative}\\&\text{we’d use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside? Integrals, in}\\&\text{similar fashion, entail a division.}\\&\text{Utilizing integral rules:}\\&\int[sin(ax)]=-\frac{cos(ax)}{a}\\&\text{Note in deriving the inside, the lone constant goes to zero.}\\&\int(\frac{(5sin(x + 12))}{43})dx=-\frac{(5cos(x + 12))}{43}+C\\&\text{Now you'll note after integration we add a constant, C. This}\\&\text{is because we're working with an indefinite integral. Note how}\\&\text{if we take the derivative of this function, the constant would}\\&\text{go to zero.}\\&\end{align*}$

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Example Question #470 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(2cos(16x))dx\end{align*}$

Possible Answers:

$\frac{sin(16x)}{8}+C$

32sin(16x)

$\frac{sin(16x)}{8}$

32sin(16x)+C

Correct answer:

$\frac{sin(16x)}{8}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, familiarity with derivative rules}\\&\text{can prove useful. After all, an integral is essentially the}\\&\text{opposite operation of a derivative. Consider how in a derivative}\\&\text{we’d use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside? Integrals, in}\\&\text{similar fashion, entail a division.}\\&\text{Utilizing integral rules:}\\&\int[cos(ax)]=\frac{sin(ax)}{a}\\&\text{Note for this problem, the }a\text{ value is } 16\\&\int(2cos(16x))dx=\frac{sin(16x)}{8}+C\\&\text{Now you'll note after integration we add a constant, C. This}\\&\text{is because we're working with an indefinite integral. Note how}\\&\text{if we take the derivative of this function, the constant would}\\&\text{go to zero.}\\&\end{align*}$

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Example Question #471 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{(9sin(x + 8))}{26})dx\end{align*}$

Possible Answers:

$-\frac{(9cos(x + 8))}{26}$

$-\frac{(288cos(x + 8))}{13}+C$

$-\frac{(9cos(x + 8))}{26}+C$

$-\frac{(288cos(x + 8))}{13}$

Correct answer:

$-\frac{(9cos(x + 8))}{26}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, familiarity with derivative rules}\\&\text{can prove useful. After all, an integral is essentially the}\\&\text{opposite operation of a derivative. Consider how in a derivative}\\&\text{we’d use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside? Integrals, in}\\&\text{similar fashion, entail a division.}\\&\text{Utilizing integral rules:}\\&\int[sin(ax)]=-\frac{cos(ax)}{a}\\&\text{Note in deriving the inside, the lone constant goes to zero.}\\&\int(\frac{(9sin(x + 8))}{26})dx=-\frac{(9cos(x + 8))}{26}+C\\&\text{Now you'll note after integration we add a constant, C. This}\\&\text{is because we're working with an indefinite integral. Note how}\\&\text{if we take the derivative of this function, the constant would}\\&\text{go to zero.}\\&\end{align*}$

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Example Question #472 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{2^{(18x)}}{4})dx\end{align*}$

Possible Answers:

$\frac{(9\cdot 2^{(18x)})}{(2ln(2))}$

$\frac{2^{(18x)}}{(72ln(2))}$

$\frac{2^{(18x)}}{(72ln(2))}+C$

$\frac{(9\cdot 2^{(18x)})}{(2ln(2))}+C$

Correct answer:

$\frac{2^{(18x)}}{(72ln(2))}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, familiarity with derivative rules}\\&\text{can prove useful. After all, an integral is essentially the}\\&\text{opposite operation of a derivative. Consider how in a derivative}\\&\text{we’d use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside? Integrals, in}\\&\text{similar fashion, entail a division.}\\&\text{Utilizing integral rules:}\\&\int[b^{ax}]=\frac{b^{ax}}{aln(b)}\\&\text{Note for this problem, the }a\text{ value is } 18\\&\int(\frac{2^{(18x)}}{4})dx=\frac{2^{(18x)}}{(72ln(2))}+C\\&\text{Now you'll note after integration we add a constant, C. This}\\&\text{is because we're working with an indefinite integral. Note how}\\&\text{if we take the derivative of this function, the constant would}\\&\text{go to zero.}\\&\end{align*}$

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Example Question #473 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{38}{(45x)})dx\end{align*}$

Possible Answers:

$\frac{(760ln(x))}{9}+C$

$\frac{(760ln(x))}{9}$

$\frac{(38ln(x))}{45}$

$\frac{(38ln(x))}{45}+C$

Correct answer:

$\frac{(38ln(x))}{45}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, familiarity with derivative rules}\\&\text{can prove useful. After all, an integral is essentially the}\\&\text{opposite operation of a derivative. Consider how in a derivative}\\&\text{we’d use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside? Integrals, in}\\&\text{similar fashion, entail a division.}\\&\text{Utilizing integral rules:}\\&\int\frac{a}{u}=aln(u)=ln(u^{a})\\&\text{Note for this problem, the }a\text{ value is } 10\\&\int(\frac{38}{(45x)})dx=\frac{(38ln(x))}{45}+C\\&\text{Now you'll note after integration we add a constant, C. This}\\&\text{is because we're working with an indefinite integral. Note how}\\&\text{if we take the derivative of this function, the constant would}\\&\text{go to zero.}\\&\end{align*}$

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Example Question #474 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{(5\cdot 2^{(18x)})}{37})dx\end{align*}$

Possible Answers:

$\frac{(90\cdot 2^{(18x)})}{(37ln(2))}$

$\frac{(90\cdot 2^{(18x)})}{(37ln(2))}+C$

$\frac{(5\cdot 2^{(18x)})}{(666ln(2))}+C$

$\frac{(5\cdot 2^{(18x)})}{(666ln(2))}$

Correct answer:

$\frac{(5\cdot 2^{(18x)})}{(666ln(2))}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, familiarity with derivative rules}\\&\text{can prove useful. After all, an integral is essentially the}\\&\text{opposite operation of a derivative. Consider how in a derivative}\\&\text{we’d use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside? Integrals, in}\\&\text{similar fashion, entail a division.}\\&\text{Utilizing integral rules:}\\&\int[b^{ax}]=\frac{b^{ax}}{aln(b)}\\&\text{Note for this problem, the }a\text{ value is } 18\\&\int(\frac{(5\cdot 2^{(18x)})}{37})dx=\frac{(5\cdot 2^{(18x)})}{(666ln(2))}+C\\&\text{Now you'll note after integration we add a constant, C. This}\\&\text{is because we're working with an indefinite integral. Note how}\\&\text{if we take the derivative of this function, the constant would}\\&\text{go to zero.}\\&\end{align*}$

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Example Question #475 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(13\cdot 3^{(16x)})dx\end{align*}$

Possible Answers:

$\frac{(13\cdot 3^{(16x)})}{(16ln(3))}+C$

$\frac{(208\cdot 3^{(16x)})}{ln(3)}+C$

$\frac{(208\cdot 3^{(16x)})}{ln(3)}$

$\frac{(13\cdot 3^{(16x)})}{(16ln(3))}$

Correct answer:

$\frac{(13\cdot 3^{(16x)})}{(16ln(3))}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, familiarity with derivative rules}\\&\text{can prove useful. After all, an integral is essentially the}\\&\text{opposite operation of a derivative. Consider how in a derivative}\\&\text{we’d use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside? Integrals, in}\\&\text{similar fashion, entail a division.}\\&\text{Utilizing integral rules:}\\&\int[b^{ax}]=\frac{b^{ax}}{aln(b)}\\&\text{Note for this problem, the }a\text{ value is } 16\\&\int(13\cdot 3^{(16x)})dx=\frac{(13\cdot 3^{(16x)})}{(16ln(3))}+C\\&\text{Now you'll note after integration we add a constant, C. This}\\&\text{is because we're working with an indefinite integral. Note how}\\&\text{if we take the derivative of this function, the constant would}\\&\text{go to zero.}\\&\end{align*}$

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Example Question #476 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{e^{(9x)}}{3}+\frac{ (64x^{10})}{7})dx\end{align*}$

Possible Answers:

$3e^{(9x)} +\frac{ (6400x^{11})}{77}$

$\frac{e^{(9x)}}{27}+\frac{ (64x^{11})}{77}$

$\frac{e^{(9x)}}{27}+\frac{ (64x^{11})}{77}+C$

$3e^{(9x)} +\frac{ (6400x^{11})}{77}+C$

Correct answer:

$\frac{e^{(9x)}}{27}+\frac{ (64x^{11})}{77}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, consider how in a derivative we’d}\\&\text{use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside. Integrals, in}\\&\text{similar fashion, entail a division. Now, although we have two}\\&\text{functions, since they're being added, we integrate separately}\\&\text{and combine the results. This is known as superposition.}\\&\text{Utilizing integral rules:}\\&\int[e^{ax}]=\frac{e^{ax}}{a}\\&\int x^{a}=\frac{x^{a+1}}{a+1}\\&\text{The }a\text{ value for }\frac{e^{(9x)}}{3}\text{ is }9\\&\text{The }a\text{ value for }\frac{(64x^{10})}{7}\text{ is }10\\&\int(\frac{e^{(9x)}}{3}+\frac{ (64x^{10})}{7})dx=\frac{e^{(9x)}}{27}+\frac{ (64x^{11})}{77}+C\\&\text{Now you'll note after integration we add a constant, C, because}\\&\text{we're working with an indefinite integral.}\\&\end{align*}$

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Example Question #477 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{3^{(16x)}}{22}+\frac{ 1}{(11x^{11})})dx\end{align*}$

Possible Answers:

$\frac{(8\cdot 3^{(16x)})}{(11ln(3))}-\frac{ 11}{(10x^{10})}+C$

$\frac{(8\cdot 3^{(16x)})}{(11ln(3))}-\frac{ 11}{(10x^{10})}$

$\frac{3^{(16x)}}{(352ln(3))}-\frac{ 1}{(110x^{10})}+C$

$\frac{3^{(16x)}}{(352ln(3))}-\frac{ 1}{(110x^{10})}$

Correct answer:

$\frac{3^{(16x)}}{(352ln(3))}-\frac{ 1}{(110x^{10})}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, consider how in a derivative we’d}\\&\text{use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside. Integrals, in}\\&\text{similar fashion, entail a division. Now, although we have two}\\&\text{functions, since they're being added, we integrate separately}\\&\text{and combine the results. This is known as superposition.}\\&\text{Utilizing integral rules:}\\&\int x^{a}=\frac{x^{a+1}}{a+1}\\&\int[b^{ax}]=\frac{b^{ax}}{aln(b)}\\&\text{The }a\text{ value for }\frac{1}{(11x^{11})}\text{ is }-11\\&\text{The }a\text{ value for }\frac{3^{(16x)}}{22}\text{ is }16\\&\int(\frac{3^{(16x)}}{22}+\frac{ 1}{(11x^{11})})dx=\frac{3^{(16x)}}{(352ln(3))}-\frac{ 1}{(110x^{10})}+C\\&\text{Now you'll note after integration we add a constant, C, because}\\&\text{we're working with an indefinite integral.}\\&\end{align*}$

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Example Question #478 : Finding Integrals

$\begin{align*}&\text{Evaluate the indefinite integral: }\\&\int(\frac{3^{(17x)}}{2}+\frac{ 3}{(7x)})dx\end{align*}$

Possible Answers:

$\frac{(3ln(x))}{7}+\frac{ 3^{(17x)}}{(34ln(3))}+C$

$\frac{(3ln(x))}{7}+\frac{ 3^{(17x)}}{(34ln(3))}$

$\frac{(27ln(x))}{343}+\frac{ (17\cdot 3^{(17x)})}{(2ln(3))}+C$

$\frac{(27ln(x))}{343}+\frac{ (17\cdot 3^{(17x)})}{(2ln(3))}$

Correct answer:

$\frac{(3ln(x))}{7}+\frac{ 3^{(17x)}}{(34ln(3))}+C$

Explanation:

$\begin{align*}&\text{In performing an integral, consider how in a derivative we’d}\\&\text{use the chain rule to multiply the derivative of the “inside”}\\&\text{of a function by the derivative of the outside. Integrals, in}\\&\text{similar fashion, entail a division. Now, although we have two}\\&\text{functions, since they're being added, we integrate separately}\\&\text{and combine the results. This is known as superposition.}\\&\text{Utilizing integral rules:}\\&\int[b^{ax}]=\frac{b^{ax}}{aln(b)}\\&\int\frac{a}{u}=aln(u)=ln(u^{a})\\&\text{The }a\text{ value for }\frac{3^{(17x)}}{2}\text{ is }17\\&\text{The }a\text{ value for }\frac{3}{(7x)}\text{ is }\frac{3}{7}\\&\int(\frac{3^{(17x)}}{2}+\frac{ 3}{(7x)})dx=\frac{(3ln(x))}{7}+\frac{ 3^{(17x)}}{(34ln(3))}+C\\&\text{Now you'll note after integration we add a constant, C, because}\\&\text{we're working with an indefinite integral.}\\&\end{align*}$

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Calculus 2 : Indefinite Integrals

Study concepts, example questions & explanations for Calculus 2

All Calculus 2 Resources

Example Questions

Example Question #469 : Finding Integrals

Example Question #470 : Finding Integrals

Example Question #471 : Finding Integrals

Example Question #472 : Finding Integrals

Example Question #473 : Finding Integrals

Example Question #474 : Finding Integrals

Example Question #475 : Finding Integrals

Example Question #476 : Finding Integrals

Example Question #477 : Finding Integrals

Example Question #478 : Finding Integrals

All Calculus 2 Resources

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