(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

y''-2y'-3y=-3t*e^(-t)

2. Relevant equations

Has to be done with method of undetermined coefficients

3. The attempt at a solution

the chacteristic equation is: c1*e^(3t) + c2*e^(-t)

my attempt at Yp is (a*t+b)*e^(-t)... so ya thats not it. i tried many versions and i keep on getting a = 3t/4.

the book has the answer as y=c1*e^(3t) + c2*e^(-t)+(3/16)*t*e^(-t)+(3/8)*t^2*e^(-t)

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# Homework Help: Getting the particular solution of this differential equation.

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