We are doing mass spring problems that stem from second order ODE's. I think my lack of linear algebra is hurting me once again in this section so any help would be greatly appreciated.(adsbygoogle = window.adsbygoogle || []).push({});

We are using a stiffness matrix of K = [ -(k1+k2), k2 (row 2) k2, -(k2+k3)]

Our first problem has the following values: m1=m2=1; k1=0, k2=2, k3=0

Setting up the stiffness matrix I got the following:

-2 2

2 -2

So this is my first stopping point: I thought you were supposed to then take the inverse of that but can you do that with a matrix that has a determinant of zero?

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# Second order ODE application question

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