Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 13 - Section 13.4 - The Definite Integral: Algebraic Viewpoint and the Fundamental Theorem of Calculus - Exercises - Page 999: 49

Answer

$\dfrac{9}{2}$

Work Step by Step

We are given that $y=|2x-3| $ $x=0$ to $x=3$ Here, the area $(A)$ can be expressed as: $A=\int_0^{3} |2x-3| \ dx$ In order to solve the above integral, we will use the following formula such as: $\int |ax+b| \ dx=\dfrac{1}{2a}(ax+b)|ax+b|+C$ Now, we have $A=\int_0^{3} |2x-3| \ dx\\ =[\dfrac{1}{4} (2x-3)|2x-3|]_0^3 $ or, $=[\dfrac{1}{4} (2(3)-3)|2(3)-3|]-[\dfrac{1}{4} (0-3)|0-3|]$ or, $=\dfrac{9}{4}+\dfrac{9}{4}$ Therefore, the required area is: $Area=\dfrac{9}{2}$
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