Simplify.-6
A. 60
B. -25
C. -60
D. 4
Answer: C
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Find the volume of the described solid.The base of a solid is the region between the curve y = 3cos x and the x-axis from x = 0 to 
. The cross sections perpendicular to the x-axis are squares with bases running from the x-axis to the curve.
A. 
?
B. 
?
C. 2?
D. 
?
Show that the function 
has no relative extrema on 
.
?
A. The function has no relative extrema by definition of the derivation.
B. The derivation of the function 
is 
. At every point the derivative exists and does not equal to 0. So by definition the function has no relative extrema on this interval.
C. The function has no relative extrema because 
does not equal to 0 at any point.
Find the value of the determinant.
A. -90 B. 90 C. -50 D. 85
Find an equation of the line passing through each pair of points. Write the equation in the form 
(-4, 7) and (1, 9)
A. 11x + 8y = -61 B. 2x - 5y = -43 C. -11x - 8y = -61 D. -2x - 5y = -43