Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 14 - Section 14.5 - Improper Integrals and Applications - Exercises - Page 1059: 12

Answer

$${\text{Diverges}}$$

Work Step by Step

$$\eqalign{ & \int_0^2 {\frac{1}{{{x^2}}}} dx \cr & {\text{The integrand }}\frac{1}{{{x^2}}}{\text{ is not continuous at }}x = 0,{\text{ then by the}} \cr & {\text{definition of improper integrals}} \cr & \int_0^2 {\frac{1}{{{x^2}}}} dx = \mathop {\lim }\limits_{r \to {0^ + }} \int_r^2 {\frac{1}{{{x^2}}}} dx \cr & {\text{Integrating }} \cr & = \mathop {\lim }\limits_{r \to {0^ + }} \left[ { - \frac{1}{x}} \right]_r^2 \cr & = - \mathop {\lim }\limits_{r \to {0^ + }} \left[ {\frac{1}{2} - \frac{1}{r}} \right] \cr & {\text{Evaluate the limit when }}r \to {0^ + } \cr & = - \left[ {\frac{1}{2} - \frac{1}{{{0^ + }}}} \right] \cr & = - \left[ {\frac{1}{2} - \infty } \right] \cr & = \infty \cr & {\text{Diverges}} \cr} $$
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.