Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 5 - Section 5.2 - Trigonometric Functions of Real Numbers - 5.2 Exercises - Page 418: 81

Answer

0.499, -0.171 A

Work Step by Step

Given $I(t)=0.8 e^{-3t} \sin 10t$ The question asks for I(t) for the values of t = 0.1, 0.5 Thus substitute those t values and find y(t) $I(t)=0.8 e^{-3(0.1)} \sin (10 * 0.1) = 0.499 A$ $I(t)=0.8 e^{-3(0.5)} \sin (10 * 0.5) = -0.171 A$
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