Differential Equations and Linear Algebra (4th Edition)

Published by Pearson
ISBN 10: 0-32196-467-5
ISBN 13: 978-0-32196-467-0

Chapter 1 - First-Order Differential Equations - 1.6 First-Order Linear Differential Equations - Problems - Page 60: 33

Answer

$y=cx + x^2\ln x-x^2$

Work Step by Step

We are given: $xy'-y=x^2 \ln x$ $\frac{xy'}{x}-\frac{y}{x}=\frac{x^2 \ln x}{x}$ $y'-x^{-1}y=x \ln x$ The general solution is given by: $y=e^{\int \frac{1}{x}}dx(c+\int e^{-\int \frac{1}{x}dx}x \ln x dx)$ Simplify: $y=x(c+\int \ln x dx)=cx + x^2\ln x-x^2$
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