1. A
   $\log\left(\sin^{-\frac{4}{7}}x\right)+c$
2. B
   $\frac{4}{7}\tan^{\frac{4}{7}}x+c$
3. C
   $-\frac{7}{4}\tan^{-\frac{4}{7}}x+c$
4. D
   $\log\left(\cos^{\frac{3}{7}}x\right)+c$

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1. A
   $\sin 2x+c$
2. B
   $\cos 2x+c$
3. C
   $\tan 2x+c$
4. D
   $2\sin 2x+c$

Tap an option to check your answer.

1. A
   $\log\left(\tan x-\sqrt{\tan^2 x-1}\right)+c$
2. B
   $\sin^{-1}(\tan x)+c$
3. C
   $1+\sin^{-1}(\cot x)+c$
4. D
   $\log\left(\tan x+\sqrt{\tan^2 x-1}\right)+c$

Tap an option to check your answer.

1. A
   $\frac{x}{1+\log x}+c$
2. B
   $x(1+\log x)+c$
3. C
   $\frac{1}{1+\log x}+c$
4. D
   $\frac{1}{1-\log x}+c$

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1. A
   $x\cos(\log x)+c$
2. B
   $\sin(\log x)+c$
3. C
   $\cos(\log x)+c$
4. D
   $x\sin(\log x)+c$

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1. A
   $\tan x-x+c$
2. B
   $x+\tan x+c$
3. C
   $x-\tan x+c$
4. D
   $-x-\cot x+c$

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1. A
   $e^x-\frac{1}{3e^{3x}}+c$
2. B
   $e^x+\frac{1}{3e^{3x}}+c$
3. C
   $e^{-x}+\frac{1}{3e^{3x}}+c$
4. D
   $e^{-x}-\frac{1}{3e^{3x}}+c$

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