Write down all of the product solutions satisfying: и +иу —D 0, 0

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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How would I do the following PDE problem a, b. I think I recognize it as a laplace form not sure though. Thanks

a. Write down all of the product solutions satisfying:
и и +и — 0, 0 <x<2, 0<у<1.
+u.
XX
yy
и(х,0) — 0, и, (0, у) %3D0%3Dи,(2, у).
b. Given the initial condition u(x,0) = sin(x)+0.5sin(3x), x E[0,27], for a
rod with ends fixed at zero temperature, write down the solution u(x,t) of
the heat equation u, = 3u without doing any integration.
xx
Transcribed Image Text:a. Write down all of the product solutions satisfying: и и +и — 0, 0 <x<2, 0<у<1. +u. XX yy и(х,0) — 0, и, (0, у) %3D0%3Dи,(2, у). b. Given the initial condition u(x,0) = sin(x)+0.5sin(3x), x E[0,27], for a rod with ends fixed at zero temperature, write down the solution u(x,t) of the heat equation u, = 3u without doing any integration. xx
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