Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 9 - Further Applications of the Integral and Taylor Polynomials - 9.1 Arc Length and Surface Area - Exercises - Page 469: 36


$$10\sqrt {17} \ \pi.$$

Work Step by Step

Since $y=4x+3$, then $y'=4$. Hence, the surface area is given by $$2\pi\int_0^1 y\sqrt{1+(y')^2}dx =2\pi\int_0^1(4x+3)\sqrt{1+4^2}dx\\ =2\sqrt {17} \pi\int_0^14 x+3 dx=2\sqrt {17} \pi( 2x^2+3x)|_0^1=10\sqrt {17} \ \pi.$$
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