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 - 8.8 Exercises - Page 575: 18

Answer

The function converges to 2

Work Step by Step

Evalute the improper integral $\int ^{\infty}_1 \frac{6}{x^4}dx $ The function is continuous on the interval, rewrite with a limit $ \lim\limits_{b \to \infty} \int ^b_1 \frac{6}{x^4}dx$ $\lim\limits_{b \to \infty} [-2x^{-3}]^b_1$ $\lim\limits_{b \to \infty} [(-2b^{-3}) - (-2)] $ evaluate b at infinity $ -\frac{2}{\infty} +2$ $0 +2$ 2 The function converges to 2 as it goes to infinity
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