- #1
illidari
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Homework Statement
y''+y'=g(x)
fundamental set of solns. of the homog. DE is:
y1= 1 , y2= e^-x
If g(x) = x^2 , yp1 = ____
Homework Equations
The Attempt at a Solution
I actually am looking at a key to an old test my teacher gave as a review for a test. The key has the asnswer as x(Ax^2+Bx+C)
Is there any reason why the x was added? Shouldn't it only be (Ax^2+Bx+C). Much thanks if someone can clarify this for me.