Find the power series representation for f(x).f(x) = ln (1 + 3x)

A. x - x2 + 3x3 - x4
B. 3x + x2 - 9x3 + x4
C. 3x - x2 + 9x3 - x4
D. x - x2 + x3 - x4

Answer: C

Mathematics

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