Differentiate.f(x) = 
(3 - x)
A. f'(x) = x2 - 1
B. f'(x) = 
+ 1
C. f'(x) = - 
- 1
D. f'(x) = 
+ 3
Answer: C
Mathematics
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Find the volume of the described solid.The base of a solid is the region between the curve y = 5cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are squares with diagonals running from the x-axis to the curve.
A. 6?
B. 
?
C. 
?
D. 
?
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Find the exact value of the indicated trigonometric function of ?.cot ? = - 
, cos ? < 0Find csc ?.
A. - 
B. 
C. - 
D. 
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Solve the equation.
= 0
A. {-1} B. {1} C. {1, -1} D. no real solution
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Factor the polynomial completely.49x2 - 36
A. (7x - 6)2 B. (7x + 6)2 C. (7x + 6)(7x - 6) D. (49x + 1)(x - 36)
Mathematics