Mgfun.mws Closed Form Evaluation of sum(H[n](x)*H[n](y)*u^n/n!,n = 0 .. infinity); Closed Form Evaluation of int(u^n*exp(-u*z/2*(1-1/(u^2)))*(BesselJ(n,z)+u*BesselJ(n-1,z)),z = 0 .. infinity); Case A Case B Chebyshev Coefficients of x*exp(x);