For the power series with radius of convergence

MATHEMATICS · Single correct · AP · Calculus BC · Infinite Sequences and Series · Infinite Sequences and Series

Problem

For the power series f(x)=∑n=0∞an(x−c)nf(x)=\sum_{n=0}^{\infty} a_n (x-c)^n with radius of convergence R>0R>0, which statement best describes the radius of convergence of f′(x)f'(x)? (a) It cannot be determined without additional information. (b) It is the same value RR. (c) It equals R2\dfrac{R}{2}. (d) It equals R2R^2.

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