x² sin æ+2x(2+cos a) cos 2 The derivative of f is f'(x) = graph of the function g defined by g(x) = x² sin x + 2x(2 + cos x) is shown above for 0 < x < 100. Let Let f be the function defined by f(x) = . The 00 (-1)*+'bn n+1 bn = f(n) for all integers n > 1. Which of the following statements about the series is true? n=1 (A) The series converges by the alternating series test. (B) The alternating series test cannot be used to determine convergence because the series is not alternating. (C) The alternating series test cannot be used to determine convergence because lim bn 7 0. (D) The alternating series test cannot be used to determine convergence because the terms bn are not decreasing.

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