1. A
   $-\frac{3\pi}{4}$
2. B
   $-\frac{\pi}{4}$
3. C
   $\frac{\pi}{4}$
4. D
   $\frac{3\pi}{4}$

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1. A
   $\frac{1}{4}$
2. B
   $\frac{1}{2}$
3. C
   1
4. D
   $2^{200}$

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1. A
   1 only
2. B
   2 only
3. C
   Both 1 and 2
4. D
   Neither 1 nor 2

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1. A
   14
2. B
   21
3. C
   35
4. D
   42

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1. A
   $C(2n,n)x$
2. B
   $C(2n,n-1)x$
3. C
   $C(2n,n)$
4. D
   $C(2n,n-1)$

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1. A
   20
2. B
   10
3. C
   2
4. D
   0

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1. A
   25
2. B
   25.5
3. C
   26
4. D
   26.5

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1. A
   $(101)_2$
2. B
   $(1001)_2$
3. C
   $(111)_2$
4. D
   $(1011)_2$

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1. A
   $(1101)_2$
2. B
   $(1001)_2$
3. C
   $(1011)_2$
4. D
   $(1111)_2$

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1. A
   $(0,0)$
2. B
   $(-2,4)$
3. C
   $(-1,4)$
4. D
   $(-1,2)$

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1. A
   1 only
2. B
   2 only
3. C
   Both 1 and 2
4. D
   Neither 1 nor 2

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1. A
   $\frac{4}{3}$
2. B
   2
3. C
   3
4. D
   4

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1. A
   $\frac{\ln2}{100}$
2. B
   $\frac{\ln5}{100}$
3. C
   $\frac{\ln10}{100}$
4. D
   $\frac{2\ln2}{100}$

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1. A
   $(0,1)$
2. B
   $[-1,1]$
3. C
   $(0,2)$
4. D
   $[0,2]$

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1. A
   1
2. B
   2
3. C
   3
4. D
   4

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1. A
   $-\frac{1}{2}$
2. B
   $\frac{1}{2}$
3. C
   1
4. D
   $\frac{3}{2}$

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

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

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1. A
   -2
2. B
   -1
3. C
   1
4. D
   2

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1. A
   1
2. B
   2
3. C
   4
4. D
   8

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1. A
   $\frac{1}{4}$
2. B
   $\frac{1}{2}$
3. C
   1
4. D
   2

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1. A
   0
2. B
   1
3. C
   2
4. D
   4

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1. A
   -1
2. B
   0
3. C
   1
4. D
   2

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1. A
   -1
2. B
   0
3. C
   1
4. D
   4

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1. A
   $\frac{1}{2}$
2. B
   1
3. C
   2
4. D
   4

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