Diff Eq's - orthogonal polynomials

[gomes.]

Diff Eq's -- orthogonal polynomials

[PLAIN]http://img27.imageshack.us/img27/566/39985815.jpg



I managed to do the first part, stuck in the part circled. Any help will be appreciated, thanks.

 

[ystael]

Try computing $$\frac{\partial F}{\partial x}$$.