Show that the equation is not an identity by listing the value(s) of the variable from among 0, 
, 
, and - 
for which the equation is false.sin 2? = 2 sin ?
A. 
, 
, and - 
B. 
and - 
C. 
, 
, and 0
D. 
and 0
Answer: A
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Solve the problem.A man on a dock is pulling in a rope attached to a rowboat at a rate of 4 feet per second. If the man's hands are 3 feet higher than the point where the rope is attached to the boat, how fast is the angle of depression changing when there are still d feet of rope out? Give your answer in radians per second in terms of d.
A. 
rads/sec
B. 
rads/sec
C. 
rads/sec
D. 
rads/sec
Find the average value of the function f over the given region.f(x, y) = ex2 over the region bounded by 
, 
, 
, and 
.
A. 2e - 1
B. e - 1
C. 
D. 
Set up an integral for the length of the curve.y = 
, 
? x ? 
A. 
B. 
C. 
D. 
Write a negation of the statement. No fifth graders play soccer.
A. Everybody plays soccer. B. Everybody does not play soccer. C. Some fifth graders play soccer. D. Fifth graders play soccer.