Calculus, 10th Edition (Anton)

Published by Wiley
ISBN 10: 0-47064-772-8
ISBN 13: 978-0-47064-772-1

Chapter 4 - Integration - 4.2 The Indefinite Integral - Exercises Set 4.2 - Page 279: 14

Answer

$$40{y^{1/4}} - \frac{{3{y^{4/3}}}}{4} + 8{y^{1/2}} + C$$

Work Step by Step

$$\eqalign{ & \int {\left[ {\frac{{10}}{{{y^{3/4}}}} - \root 3 \of y + \frac{4}{{\sqrt y }}} \right]dy} \cr & {\text{Rewrite the integrand}} \cr & = \int {\left( {\frac{{10}}{{{y^{3/4}}}} - {y^{1/3}} + \frac{4}{{{y^{1/2}}}}} \right)dy} \cr & = \int {\left( {10{y^{ - 3/4}} - {y^{1/3}} + 4{y^{ - 1/2}}} \right)dy} \cr & {\text{Sum rule}} \cr & = \int {10{y^{ - 3/4}}dy} - \int {{y^{1/3}}dy} + \int {4{y^{ - 1/2}}dy} \cr & {\text{Constant rule}} \cr & = 10\int {{y^{ - 3/4}}dy} - \int {{y^{1/3}}dy} + 4\int {{y^{ - 1/2}}dy} \cr & {\text{Integrate by using the power rule}} \cr & = 10\left( {\frac{{{y^{ - 3/4 + 1}}}}{{ - 3/4 + 1}}} \right) - \frac{{{y^{1/3 + 1}}}}{{1/3 + 1}} + 4\left( {\frac{{{y^{ - 1/2 + 1}}}}{{ - 1/2 + 1}}} \right) + C \cr & = 10\left( {\frac{{{y^{1/4}}}}{{1/4}}} \right) - \frac{{{y^{4/3}}}}{{4/3}} + 4\left( {\frac{{{y^{1/2}}}}{{1/2}}} \right) + C \cr & = 40{y^{1/4}} - \frac{{3{y^{4/3}}}}{4} + 8{y^{1/2}} + C \cr} $$
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