1. The problem statement, all variables and given/known data 3. The attempt at a solution %2.11 x=1:0.5:5; a=sqrt(2.8); n=[1:1:100]; Sn=prod(1-(x.^2)./(n.^2-a^2)); S_inf=(a/sqrt(a^2+x.^2)).*sin(pi*sqrt(a^2+x.^2))/sin(pi*a); e_n=100*(Sn-S_inf)./S_inf I know I can't use ./ if the two matrices are different, meaning x./n. How do I use the prod function without going through this issue?