Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 3: Derivatives - Practice Exercises - Page 178: 41

Answer

$\frac{dy}{dx}=\frac{-2-y}{x+3}$

Work Step by Step

Take the derivative of the equation on each side separately. Apply chain rule when differentiating the "y" variables since we are differentiating with respect to x: $x\frac{dy}{dx}+y+2+3\frac{dy}{dx}=0$ Move all terms with dy/dx to one side of the equation, and isolate dy/dx: $x\frac{dy}{dx}+3\frac{dy}{dx}=-2-y$ $\frac{dy}{dx}(x+3)=-2-y$ $\frac{dy}{dx}=\frac{-2-y}{x+3}$
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