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

Mathematics

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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

Mathematics

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.

Mathematics

Set up an integral for the length of the curve.y =  ? x ? 

A.
B.
C.
D.

Mathematics

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.

Mathematics