Evaluate the expression.
+ 
? 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the derivative of y.y = sech (-3?) (1 - ln sech(-3?))
A. sech (-3?) tanh (-3?) ln sech (-3?) B. -3 sech (-3?) tanh (-3?) ln sech (-3?) C. -3 sech (-3?) tanh (-3?) ln (-3?) D. 1 + 3 sech (-3?) tanh (-3?) ln sech (-3?)
Mathematics
Decompose into partial fractions.
A. 
- 
B. 
- 
C. 
- 
D. 
+ 
Mathematics
The graph of 
is given in the figure. State whether 
or 
A. a > 0 B. a < 0
Mathematics
Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The coordinate axes and the line 
A. 
B. 
C. 
D. 
Mathematics