Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 8 - Integration Techniques, L'Hopital's Rule, and Improper Integrals - Review Exercises - Page 580: 82

Answer

The integral diverges.

Work Step by Step

The integral is $\displaystyle\int_0^2\frac{7}{2-x}dx$. However, as the integrand approaches $x=2$, it approaches a vertical asymptote. Hence, we take the limit. $\displaystyle\lim_{c\to2^-}\int_0^2\frac{7}{2-x}dx=\lim_{c\to2^-}-7\left[\ln|2-x|\right]_0^c$. Unfortunately, the limit does not exist, as $\lim_{c\to2^-}\ln|2-c|$ approaches infinity. The integral $\fbox{diverges}$.
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