Express the product as a sum or difference.sin 7x cos 5x

A. (sin 12x + cos 2x)
B. (cos 12x - cos 2x)
C. sin (cos 35x2)
D. (sin 12x + sin 2x)

Answer: D

Mathematics

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Find the quadratic approximation of f at x = 0.f(x) = eln 8x

A. Q(x) = 1 + 8x + 32x2 B. Q(x) = 8x - 32x2 C. Q(x) = 8x + 32x2 D. Q(x) = 8x

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Solve the problem.Find the work done by a force of 16i (newtons) in moving as object along a line from the origin to the point  (distance in meters).

A. 16 joules
B. 160 joules
C. 160 joules
D. 113.1 joules

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Mathematics

Solve the nonlinear inequality.9x2 + y2 > 144

A.

B.

C.

D.

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Evaluate the expression.10P4

A. 5040 B. 34 C. 6 D. 210

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Mathematics