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7. Use the Maclaurin Series Reference Sheet. (10 pts) Consider the function f (x) = exs. (a) Differentiate the Maclaurin series for f (x). (Hint: Use only the first four nonzero terms of the Maclaurin Series for f (x) = ex.) (b) Identify the function represented by the differentiated series. (c) Estimate the derivative f' (x) at x = 0.1. Round your answer to four decimal places.8. The Maclaurin Series for f(x) = cos x is written below. CO 72 (-1)k x2k COS X = 1 - 2! + ... 4! 6! (2k)! for |x|