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APM346--2019 => APM346--Lectures & Home Assignments => Home Assignment 2 => Topic started by: Wanying Zhang on January 18, 2019, 06:16:16 PM

Title: Secondary Textbook Chp1.2 Exercise 10
Post by: Wanying Zhang on January 18, 2019, 06:16:16 PM
I have difficulties solving this problem: $u_x + u_y + u = e^{x+2y}$. I get $\frac{dy}{dx} = 1$ from the characteristic equation and have no ideas what should be followed. Any reply would be appreciated.
Title: Re: Secondary Textbook Chp1.2 Exercise 10
Post by: Victor Ivrii on January 18, 2019, 09:05:21 PM
Read Section 2.1, Subsection  "semilinear equations"