Evaluate the integral.
dx
A. 
- ln 
+ 
ln(x2 + 1) + C
B. 
- ln
- 3 tan-1 x + 
ln(x2 + 1) + C
C. 
- ln
- 5 tan-1 x + ln(x2 + 1) + C
D. 
- 3 tan-1 x + 
ln(x2 + 1) + C
Answer: B
Mathematics
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Evaluate the expression for the given replacement values.x + y
for x = -52 and y = -22
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Find the exact value of the expression.tan 
A. -2 - 
B. 
- 2
C. 2 - 
D. 2 + 
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