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OpenStudy (anonymous):
find the solution to y''+2y'-3y=2x+1 So first you find solution for homogeneous DE (this is y=c1*e^(-3x)+c2*e^x Next you have to find particular solution ( i have tried with Wronskian-i get wrong result)
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OpenStudy (jamesj):
It must be that the particular solution is of the form Ax^3 + Bx^2 + Cx + D Substitute that form (Ansatz) into the equation and solve for A,B,C,D.
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