using symsum for elements of array

Hello everyone I wrote this code:

syms q
llayers=5;
effstress=zeros(1,llayers);
thick=[20 30 10 20 50]
rho=[120 130 120 150 140]
for i=2:llayers
    effstress(1,i)=symsum(thick(q).*rho(q),1,i-1)
end

Would you please help me in this issue? Thanks a lot

Answer 1

[Star Strider]

I am not certain I understand what you want.

See if this works:

thick=[20 30 10 20 50];
rho=[120 130 120 150 140];
effstress = cumsum(thick .* rho);

effstress =
        2400        6300        7500       10500       17500