Author Topic: Secondary Textbook Chp1.2 Exercise 10  (Read 552 times)

Wanying Zhang

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Secondary Textbook Chp1.2 Exercise 10
« 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.

Victor Ivrii

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Re: Secondary Textbook Chp1.2 Exercise 10
« Reply #1 on: January 18, 2019, 09:05:21 PM »
Read Section 2.1, Subsection  "semilinear equations"
« Last Edit: January 19, 2019, 07:05:18 AM by Victor Ivrii »