I have this question: [(1/t^2)+t].

This is my working out.

=(t^-2) + (t)

=(t^-1/-1) + (t^2/2) + C

=-t^-1 + (t^2/2) + C

=-(1/t) + (t^2/2) + C

But the answer I have says (t^2/2) - (1/t) + C

Can some one please check if I have done something wrong.

Thanks