Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.
A. 2xy
B. 2x2y4
C. 2x8y8
D. 2x4y8
Answer: B
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Use reduction formulas to evaluate the integral.
A. - 
cot3 4x + 
cot 4x + C
B. - 
cot3 4x - 
cot 4x + x + C
C. - 
cot2 4x + 
cot 4x - x + C
D. - 
cot3 4x + 
cot 4x + x + C
Provide an appropriate response.The compounding table for one dollar can be used to determine the effective rate.
A. True B. False
Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, -7) and (0, 7)
vertices at (0, -49), (0, 49)
B. center at (0, 0)
foci at (-9, 0) and (9, 0)
vertices at (-81, 0), (81, 0)
C. center at (0, 0)
foci at (0, - 4
) and (0, 4
)
vertices at (0, -9), (0, 9)
D. center at (0, 0)
foci at (- 4
, 0) and (4
, 0)
vertices at (-9, 0), (9, 0)
Solve the equation.2x(x + 2) = 0
A. -2, 0
B. -2, 
C. 
, 2
D. 0, 2