need help...
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Originally Posted by harry need help... I would try a trial PI of the form: y(x) = [x^3 e^x]/6 + Asin(x)+Bcos(x) + ax^2 + bx +c and find the values of A, B, a, b, and c that give a PI. RonL
y(x)=(Ax+B)e^x+(Csinx+Dcosx)+(Ex^2+Fx+G)
Originally Posted by ThePerfectHacker y(x)=(Ax+B)e^x+(Csinx+Dcosx)+(Ex^2+Fx+G) Erherm ... [D^2 - 2D + 1](Ax+B)e^x = 0 RonL
Originally Posted by CaptainBlank Erherm ... [D^2 - 2D + 1](Ax+B)e^x = 0 RonL Right. It looked like D^2-2D+2 To me.
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