H1. Consider the differential equation d xcos(y) y+ (x+2) sin(y). dt First, show this equation is not exact. However, multiplying by u(x) = A(x)e* ren- ders the above differential equation exact for a specific choice of A(x). Find this A(x) and then solve the exact equation A(x)excos(y) +A(x)e*(x+2)sin(y). dy dx

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The "dt" in the question should be insteaded by "dx"

H1. Consider the differential equation
xcos(y) y+ (x+2) sin(y).
d
dt
First, show this equation is not exact. However, multiplying by u(x) = A(x)e* ren-
ders the above differential equation exact for a specific choice of A(x). Find this
A(x) and then solve the exact equation
A(x)excos(y) +A(x)e*(x+2)sin(y).
dy
dx
Transcribed Image Text:H1. Consider the differential equation xcos(y) y+ (x+2) sin(y). d dt First, show this equation is not exact. However, multiplying by u(x) = A(x)e* ren- ders the above differential equation exact for a specific choice of A(x). Find this A(x) and then solve the exact equation A(x)excos(y) +A(x)e*(x+2)sin(y). dy dx
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