Solve Ut - · 6ux +4u = 5e*, -∞0 u(x, 0) = 2 sin(x) First change to characteristic coordinates (§, s) where s = t and દુઃ $ = ☐ help (formulas) picked so that when s Us + = = t = 0 then = x, and that the equation becomes an ODE in s : help (formulas) with initial condition u. 8=0 help (formulas) Solving this ODE, write u in terms of (§, s) : u = help (formulas) Finally write u in terms of (x, t) : u = help (formulas) Book: Section 1.9 of Notes on Diffy Qs

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.4: Fractional Expressions
Problem 37E
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Solve
Ut
-
· 6ux +4u = 5e*, -∞<x<∞, t>0
u(x, 0) = 2 sin(x)
First change to characteristic coordinates (§, s) where s = t and
દુઃ
$ = ☐
help (formulas)
picked so that when s
Us +
=
= t
=
0 then = x, and that the equation becomes an ODE in s :
help (formulas)
with initial condition u. 8=0
help (formulas)
Solving this ODE, write u in terms of (§, s) :
u =
help (formulas)
Finally write u in terms of (x, t) :
u =
help (formulas)
Book: Section 1.9 of Notes on Diffy Qs
Transcribed Image Text:Solve Ut - · 6ux +4u = 5e*, -∞<x<∞, t>0 u(x, 0) = 2 sin(x) First change to characteristic coordinates (§, s) where s = t and દુઃ $ = ☐ help (formulas) picked so that when s Us + = = t = 0 then = x, and that the equation becomes an ODE in s : help (formulas) with initial condition u. 8=0 help (formulas) Solving this ODE, write u in terms of (§, s) : u = help (formulas) Finally write u in terms of (x, t) : u = help (formulas) Book: Section 1.9 of Notes on Diffy Qs
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