Find the sum of each of the following series by recognizing how it is related to something

Question:

Find the sum of each of the following series by recognizing how it is related to something familiar?
(a) x - x2 + x3 - x4 + x5 - ...
(b) 1 / 2! + x / 3! + x2 / 4! + x3 / 5! + ...
(c) 2x + 4x2 / 2 + 8x3 / 3 + 16x4 / 4 + ...
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

Question Posted: