Question: Please show all work, step by step. Thank you so much! 9. (10 pts) Use the series representation of ex and ex to calculate cosh(x),

Please show all work, step by step. Thank you so much!

9. (10 pts) Use the series representation of ex and ex to calculate cosh(x), the hyperbolic cosine function. (a) cosh{X) = g g + 3'") {b} Compare your series for cosh(x) with the series for cos(x). What is the major difference between the two series

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