Calculus: Early Transcendentals (2nd Edition)

Published by Pearson
ISBN 10: 0321947347
ISBN 13: 978-0-32194-734-5

Chapter 9 - Power Series - 9.4 Working with Taylor Series - 9.4 Exercises - Page 703: 49

Answer

$\ln(\dfrac{3}{2})=\dfrac{1}{2}-\dfrac{(\dfrac{1}{2})^2}{2}+\dfrac{(\dfrac{1}{2})^3}{3}-\dfrac{(\dfrac{1}{2})^4}{4}+....$

Work Step by Step

The first $4$ non-zero terms of Taylor series can be written as: $\ln(1+x)=x-\dfrac{x^2}{2}+\dfrac{x^3}{3}-\dfrac{x^4}{4}+....$ Plug $x=\dfrac{1}{2}$ in the above equation to obtain: $\ln(\dfrac{3}{2})=\dfrac{1}{2}-\dfrac{(\dfrac{1}{2})^2}{2}+\dfrac{(\dfrac{1}{2})^3}{3}-\dfrac{(\dfrac{1}{2})^4}{4}+....$ Therefore, the first $4$ non-zero terms of an infinite series is equal to: $\ln(\dfrac{3}{2})=\dfrac{1}{2}-\dfrac{(\dfrac{1}{2})^2}{2}+\dfrac{(\dfrac{1}{2})^3}{3}-\dfrac{(\dfrac{1}{2})^4}{4}+....$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.