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 - 11.10 Exercises - Page 789: 14

Answer

$6-11(x+2)+6(x+2)^{2}-(x+2)^{3}$ $R=\infty$

Work Step by Step

Taylor's series of $f$ centered at $a$ is $f(x)=\dfrac{f^{n}(a)(x-a)^{n}}{(n)!}=f(a)+f'(a)(x-a)+\frac{f''(a)(x-a)^{2}}{2}+\frac{f'''(a)(x-a)^{3}}{6}+....$ Given: $f(x)=x-x^{4}$ $x-x^{3}=6-11(x+2)+\frac{12(x+2)^{2}}{2}+\frac{-6(x-2)^{3}}{6}+0+0$ $=6-11(x+2)+6(x+2)^{2}-(x+2)^{3}$ $R=\infty$
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