The Maclaurin series for f(x) = x cos x is given by (-1)"x²n+1 Σ (2n)! n=0 (-1)"x2n+1 (2n)! n=1 (-1)"x²n (2n)! n=0 -1)" x2n+1 ( (2n + 1)! 00 n=0 8W! WI 8W! W

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