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 - 1.12 Chapter Review - Additional Problems - Page 110: 18

Answer

$y(x)=x^2(\ln x)^2+Cx^2$

Work Step by Step

We are given: \[x\frac{dy}{dx}-2y=2x^2\ln x\] Dividing both sides by $x$, \[\frac{dy}{dx}-\frac{2y}{x}=2x\ln x\] Integrating factor, \[I=e^{-2\int \frac{x1}{x}dx}=e^{-2\ln x}=x^{-2}\] The equation becomes: $\frac{d}{dx}(x^{-2}y)=2x^{-1}\ln x$ Integrating both sides: $x^{-2}y=(\ln x)^2+C$ $C_{1}$ is constant of integration Hence general solution is $y(x)=x^2(\ln x)^2+Cx^2$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.