Bobosharif S. answered • 03/19/18

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The general solution looks good, but you have to look for a particular solution in the form

Yp(x) = Ax

^{3}+ Bx^{2}+ Cx +D. (not -5 instead of D).It seems to me that you are making progress. Good luck.

Bobosharif S.

Y

_{p}(x) is a particular solution of the inhomogeneous equation and the general solution of the equation is y_{G}(x)=y(x)+y_{p}(x). Initial conditions y(0)=6 and y'(0)=0 are for the general solution y_{G}(x)
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03/19/18

Phantom L.

^{3}+ (3/2)x^{2}+ (3/2)x - 5/2 (A=1/2 B=3/2 C=3/2 and D=-5/2)03/19/18