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1. A
   $\log\left(\frac{x-1}{x-2}\right) + c$, where c is the constant of integration
2. B
   $\log\left(\frac{x-2}{(x-1)^2}\right) + c$, where c is the constant of integration
3. C
   $\log\left(\frac{x-2}{x-1}\right) + c$, where c is the constant of integration
4. D
   $\log\left(\frac{(x-2)^2}{x-1}\right) + c$, where c is the constant of integration

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1. A
   $4x^2 - 7x + 3 = 0$
2. B
   $4x^2 + 7x + 3 = 0$
3. C
   $4x^2 - 3x - 7 = 0$
4. D
   $6x^2 - 5x + 1 = 0$

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

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1. A
   $\frac{1}{3}$
2. B
   $\frac{2}{3}$
3. C
   $\frac{3}{7}$
4. D
   $\frac{4}{9}$

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1. A
   85
2. B
   95
3. C
   185
4. D
   195

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

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1. A
   4
2. B
   6
3. C
   8
4. D
   3

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1. A
   2
2. B
   16
3. C
   $\frac{1}{\sqrt{2}}$
4. D
   4

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