Calculus (3rd Edition)

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

Chapter 3 - Differentiation - 3.2 The Derivative as a Function - Exercises - Page 115: 51


$ x=\frac{1}{2}$

Work Step by Step

The slope of the tangent line=4 $\implies \frac{dy}{dx}=4$ That is, $\frac{d}{dx}(x^{2}+3x-7)=4$ $\implies 2x+3=4$ Or $ x=\frac{4-3}{2}=\frac{1}{2}$
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