Find the first four nonzero terms in the Maclaurin series for the function.f(x) = x sin(3x)

A. 3x - x4 + x6 - x8 + . . .
B. 3x - x3 + x5 - x7 + . . .
C. 3x2 + x4 + x6 + x8 + . . .
D. 3x2 - x4 + x6 - x8 + . . .

Answer: D

Mathematics

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