- #1
JoshMaths
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Homework Statement
y'' - 3y' + 2y = e2xcos x
The Attempt at a Solution
So this is a second order inhomogeneous equation.
gives λ = {2,1}
get yCF giving Ae2x + Bex
so yP = e2x(Ccosx + Dsinx)
Here is where is gets a bit fuzzy.
Subbing this into the top equation gives me 2e2x((-2D-C)cosx + (2C-D)sinx)
which is wrong, i have gone through it and am missing something can you help me find this correct expression? Thanks.
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