ratsimp and many terms to collect

On Wednesday 15 of May 2013 20:07:13 you wrote:
> I think Leo was suggesting something like:
> 
> (%i7) apply(ratsimp, cons(e1,Lx));
> (%o7) x(l,p-1)*(a*C3-b*C2)-b*x(l-1,p-1)*C3+x(l+1,p-1)*(a*C2-b*C1)+ ... 

Many, many thanks! 
Thank you very much.
 
> Barton
 
Zbigniew