1. The problem statement, all variables and given/known data y''+t^2*y'-y=1-t^2 2. Relevant equations y(0)=-2 y'(0)=1 Find the first 6 coefficients C1=-2 C2=1 C3=? (-1?) C4=? C5=? C6=? 3. The attempt at a solution Okay so I tried to do this but I'm not used to having anything on the RHS of the equation. I got down to [tex]\Sigma[/tex](n+1)(n+2)an+2tn+[tex]\Sigma[/tex]an-1(n-1)tn-[tex]\Sigma[/tex]antn-a0+2*a2 Where the sigma's have n=2 on the bottoms of them. Don't know what to do next tho!