Prove that if then findProblem:

Proof:

Lemma:Let then

Proof:It can be readily seen that . So that . Furthermore . Thus the functional equation and the boundary condition are satisfied

Now using this we can get somehwere. If we look closely at we can see that . Now using the common fact that yields . Now using a litle snake-oil we can see that where . So then or equivalently . So that