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Ch. 6 - Integration of exponential, log & trigo. function

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

 ∫2sin⁡ 7x dx =\int_{ }2\sin\ 7x\ dx\ =  

a)

 7cos⁡ 7x + C7\cos\ 7x\ +\ C  

b)

 2cos⁡ 7x + C2\cos\ 7x\ +\ C  

c)

 27cos⁡ 7x + C\frac{2}{7}\cos\ 7x\ +\ C  

d)

 −27cos⁡ 7x + C-\frac{2}{7}\cos\ 7x\ +\ C  

2.

 ∫2cos⁡(6+3x) dx =\int_{ }^{ }2\cos\left(6+3x\right)\ dx\ =  

a)

 26sin⁡ (6+3x) + C\frac{2}{6}\sin\ \left(6+3x\right)\ +\ C  

b)

 16sin⁡ (6+3x) + C\frac{1}{6}\sin\ \left(6+3x\right)\ +\ C  

c)

 23sin⁡ (6+3x) + C\frac{2}{3}\sin\ \left(6+3x\right)\ +\ C  

d)

 23xsin⁡ (6+3x) + C\frac{2}{3x}\sin\ \left(6+3x\right)\ +\ C  

3.

Evaluate: ∫(5sin⁡⁡x−4cos⁡⁡x)dx∫(5\sin⁡x-4\cos⁡x)dx  

a)

 5sin⁡⁡x−4cos⁡⁡x+C5\sin⁡x-4\cos⁡x+C  

b)

 −5cos⁡⁡x−4sin⁡⁡x+C-5\cos⁡x-4\sin⁡x+C  

c)

 5cos⁡⁡x+4sin⁡⁡x+C5\cos⁡x+4\sin⁡x+C  

4.

Evaluate: ∫sin⁡⁡θcot⁡⁡θdθ∫\sin⁡θ\cot⁡θdθ  

a)

 sin⁡⁡θ+C\sin⁡θ+C  

b)

 cos⁡⁡θ+C\cos⁡θ+C  

c)

 cot⁡⁡θ+C\cot⁡θ+C  

5.

 ∫tan⁡xdx\int_{ }^{ }\tan xdx 

a)

cotx + C

b)

 sec⁡2x+C\sec^2x+C  

c)

ln|secx| +C

d)

ln|cosx| +C

6.

 ∫sin⁡34xdx\int_{ }^{ }\sin^34xdx  

a)

 −14cos⁡4x+112cos⁡34x +C-\frac{1}{4}\cos4x+\frac{1}{12}\cos^34x\ +C  

b)

 14cos⁡4x+112cos⁡34x +C\frac{1}{4}\cos4x+\frac{1}{12}\cos^34x\ +C  

c)

 −14cos⁡4x−112cos⁡34x +C-\frac{1}{4}\cos4x-\frac{1}{12}\cos^34x\ +C  

d)

none of the above

7.

 ∫sin⁡42xcos⁡22xdx\int_{ }^{ }\sin^42x\cos^22xdx  

a)

 116x+1128sin⁡8x−196sin⁡34x+C\frac{1}{16}x+\frac{1}{128}\sin8x-\frac{1}{96}\sin^34x+C  

b)

 116x−1128sin⁡8x−196sin⁡34x+C\frac{1}{16}x-\frac{1}{128}\sin8x-\frac{1}{96}\sin^34x+C  

c)

 116x−1128sin⁡8x+196sin⁡34x+C\frac{1}{16}x-\frac{1}{128}\sin8x+\frac{1}{96}\sin^34x+C  

d)

none of the above

8.
For the indicated integral, what would the first step be?
a)
Save a sine and convert the rest to cosines
b)
Save a cosine and convert the rest to sines
c)
Use u-substitution
d)
Just integrate
9.

 ∫(e4x−2x3)dx\int_{ }^{ }\left(\frac{e^{4x^{-2}}}{x^3}\right)dx  

a)

 −18e4x−2+C\frac{-1}{8}e^{4x^{-2}}+C  

b)

 18e4x−2+C\frac{1}{8}e^{4x^{-2}}+C  

c)

 −8e4x−2+C-8e^{4x^{-2}}+C  

d)

none of the above

10.

 ∫1xexdx\int_{ }^{ }\frac{1}{\sqrt{x}}e^{\sqrt{x}}dx  

a)

 2xex+C\frac{2}{\sqrt{x}}e^{\sqrt{x}}+C  

b)

 12xex+C\frac{1}{2\sqrt{x}}e^{\sqrt{x}}+C  

c)

 12ex+C\frac{1}{2}e^{\sqrt{x}}+C  

d)

 2ex+C2e^{\sqrt{x}}+C  

11.

 ∫eln⁡∣x∣xdx\int_{ }^{ }\frac{e^{\ln\left|x\right|}}{x}dx  

a)

 x+Cx+C  

b)

 1xeln⁡∣x∣+C\frac{1}{x}e^{\ln\left|x\right|}+C  

c)

 e∣x∣+Ce^{\left|x\right|}+C  

d)

None

12.

 ∫(e−x+3)4e−xdx\int_{ }^{ }\left(e^{-x}+3\right)^4e^{-x}dx  

a)

 ((e−x+3)e−x)55+c\frac{\left(\left(e^{-x}+3\right)^{ }e^{-x}\right)^5}{5}+c  

b)

 −(e−x−3)55+c\frac{-\left(e^{-x}-3\right)^5}{5}+c  

c)

 15(e−x+3)5+c\frac{1}{5}\left(e^{-x}+3\right)^5+c  

d)

 −15(e−x+3)5+c-\frac{1}{5}\left(e^{-x}+3\right)^5+c  

13.

Integrate the partial fraction with respect to x
 ∫ 1(x) + 4(2x −1 ) dx\int_{ }^{ }\ \frac{1}{\left(x\right)}\ +\ \frac{4}{\left(2x\ -1\ \right)}\ dx  

a)

 ln⁡ ∣x∣ + 8 ln⁡∣2x−1∣+c\ln\ \left|x\right|\ +\ 8\ \ln\left|2x-1\right|+c  

b)

 ln⁡ ∣x∣ + 4 ln⁡ ∣x−1∣+c\ln\ \left|x\right|\ +\ 4\ \ln\ \left|x-1\right|+c  

c)

 ln⁡ ∣x∣ + 4 ln⁡∣2x−1∣+c\ln\ \left|x\right|\ +\ 4\ \ln\left|2x-1\right|+c  

d)

 ln⁡ ∣x∣ + 2 ln⁡∣2x−1∣+c\ln\ \left|x\right|\ +\ 2\ \ln\left|2x-1\right|+c  

14.

 ∫(5x3−16e−4x+1x)dx\int\left(5\sqrt{x^3}-16e^{-4x}+\frac{1}{x}\right)dx  

a)

 2x52+4x−4x+ln⁡∣x∣+C2x^{\frac{5}{2}}+4x^{-4x}+\ln\left|x\right|+C  

b)

 5x13+4e−4x+ln⁡∣x∣+C5x^{\frac{1}{3}}+4e^{-4x}+\ln\left|x\right|+C  

c)

 2x52−4e−4x+ln⁡∣x∣+C2x^{\frac{5}{2}}-4e^{-4x}+\ln\left|x\right|+C  

d)

Nothing is correct

15.

Solve  ∫(ln⁡3x)4xdx\int_{ }\frac{\left(\ln3x\right)^4}{x}dx  

a)

 ln⁡(3x)55+C\frac{\ln\left(3x\right)^5}{5}+C  

b)

 (ln⁡3x)55+C\frac{\left(\ln3x\right)^5}{5}+C  

c)

 ln⁡3x+C\ln3x+C  

d)

 (ln⁡3x)515+C\frac{\left(\ln3x\right)^5}{15}+C