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1. Given the function f(x) = (a) Find a power-series representation for f(r). (2 point (b) Use (a. ) to show that [f(x) da = ) n(n + 1) (n + 2)! (-2) "-1 (3 point n=1 2. Let g(x) = evcosa+. Approximate the value of g(0.2) using the second degree Maclaurin polynomial of g. points)