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help me get the general solution please. y'' - 3y' -4y=30e^{4x}

Mathematics
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D2-3D-4=0 -> D=-1 , 4 so e-x & e4x are homo solutions. Yp=Axe4x then find a
A
A=10 so y=c1e-x+c2e4x+10xe4x

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no c1-5=c !!!
looks like college math to me
exactly
exactly
what class is that
diffeerential equation
took is 2 yrs ago but i will try to help you, where are you stuck?
in determining the coefficient . i keep on getting zero.

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