Multivariable Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 0-53849-787-4
ISBN 13: 978-0-53849-787-9

Chapter 11 - Infinite Sequences and Series - 11.1 Exercises - Page 724: 8

Answer

{$-\frac{1}{2},\frac{2}{3},-\frac{3}{7},\frac{4}{25},-\frac{5}{121}$}

Work Step by Step

$a_{n}=\frac{(-1)^{n}n}{n!+1}$ $a_{1}=\frac{(-1)^{1}1}{1!+1}=-\frac{1}{2}$ $a_{2}=\frac{(-1)^{2}2}{2!+1}=\frac{2}{3}$ $a_{3}=\frac{(-1)^{3}3}{3!+1}=-\frac{3}{7}$ $a_{4}=\frac{(-1)^{4}4}{4!+1}=\frac{4}{25}$ $a_{5}=\frac{(-1)^{5}5}{5!+1}=-\frac{5}{121}$
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