1. A
   $\frac{\sqrt{5}}{2}$
2. B
   $-\frac{\sqrt{5}}{2}$
3. C
   $\frac{1}{2}$
4. D
   $-\frac{1}{2}$

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1. A
   $-\frac{625}{168}$
2. B
   $-\frac{343}{600}$
3. C
   $\frac{625}{168}$
4. D
   $\frac{343}{600}$

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1. A
   7
2. B
   14
3. C
   $4\sqrt{3}$
4. D
   $8\sqrt{3}$

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

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1. A
   Only one value
2. B
   Only two values
3. C
   Only three values
4. D
   Four values

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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
   $3x+4y-25=0$
2. B
   $4x+3y-24=0$
3. C
   $4x-3y=0$
4. D
   $3x-4y+7=0$

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1. A
   $x-\sqrt{3}y-8=0$
2. B
   $x+\sqrt{3}y-8=0$
3. C
   $\sqrt{3}x+y-8\sqrt{3}=0$
4. D
   $\sqrt{3}x-y-8\sqrt{3}=0$

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1. A
   $2x-y+1=0$
2. B
   $3x-2y-1=0$
3. C
   $3x-4y+6=0$
4. D
   $2x+3y-26=0$

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1. A
   $\frac{\sqrt{3}}{2}$
2. B
   $\sqrt{3}$
3. C
   $\frac{\sqrt{5}}{2}$
4. D
   $\sqrt{5}$

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1. A
   $p = q$
2. B
   $p = \sqrt{3}q$
3. C
   $p = 2\sqrt{3}q$
4. D
   $2\sqrt{3}p = q$

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

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1. A
   $\langle 2/3, 2/3, 1/3\rangle$
2. B
   $\langle 1/3, 2/3, 2/3\rangle$
3. C
   $\left\langle\frac{1}{\sqrt{6}},\frac{1}{\sqrt{6}},\frac{2}{\sqrt{6}}\right\rangle$
4. D
   $\left\langle\frac{2}{\sqrt{6}},\frac{1}{\sqrt{6}},\frac{1}{\sqrt{6}}\right\rangle$

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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
   $\vec{a}+\vec{b}$
2. B
   $\vec{a}-\vec{b}$
3. C
   $\frac{\vec{a}+\vec{b}}{2}$
4. D
   $\frac{\vec{a}-\vec{b}}{2}$

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1. A
   $\frac{\pi}{6}$
2. B
   $\frac{\pi}{4}$
3. C
   $\frac{\pi}{3}$
4. D
   $\frac{\pi}{2}$

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1. A
   $-8$
2. B
   $-32$
3. C
   $8$
4. D
   $0$

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1. A
   $0 < x < 2$
2. B
   $x < 0$
3. C
   $x > 2$
4. D
   $0 \leq x \leq 2$

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1. A
   $\frac{\pi}{6}$
2. B
   $\frac{\pi}{4}$
3. C
   $\frac{\pi}{3}$
4. D
   $\frac{\pi}{2}$

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

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1. A
   7
2. B
   5
3. C
   4
4. D
   3

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

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

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1. A
   $xe^x\ln x+c$
2. B
   $x^2e^x\ln x+c$
3. C
   $x+e^x\ln x+c$
4. D
   $xe^x+\ln x+c$

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