(a) By differentiating a suitable number of times, obtain the Maclaurin series of ex in ascending powers of x up to the term in x³. (b) Write down the Maclaurin series of e** - e-4*. (c) Use your answer to part b) to find an approximate value of e0.2 1 80.2 m Give your answer in the form where m and n are integers. - n

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