I'm using the method of undetermined coefficients here, but I'm either not making the correct ansatz or I'm just confused on the method.(adsbygoogle = window.adsbygoogle || []).push({});

The problem is 2y'' + 3y' + y = t^2.

I gussed Y = At^2. Is this correct? It doesn't solve the differential equation, which is the only check I know.

So from there (assuming Y is correct) I plug in and get 4A +6At + At^2 = t^2. Now I don't know what to do next.

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# Homework Help: Help solving non homogenous second order ODEs

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