please please can someone hep me on this as i dont have a clue where to start.

thanks loads
Edgar

Use Rodrigues' Formula to show that

P' n+1(x) - P' n-1(x) = (2n + 1)Pn(x)

Hence show that the
integral between one and x of Pn(x) dx =1/(2n + 1)[Pn-1(x) - Pn+1(x)]