Hi,

Can anybody help me with coding this summation into matlab, please:

where J is (3×6), A is (6×6) and Phi is (3x3x9).

I've tried with this code:

` % for ii=1:hor`

for mm=1:ii G(:,:,ii)=sum(kron(J*A'^(ii-mm),Phi(:,:,mm)),3); end end %

but it doesn't seem to work, as I get incorrect results. I think the mistake is in the sum function, but I don't know other way of coding the summation (cumsum function doesn't work either).

I'd really appreciate some help here, as I'm completely stuck.

best,

## Best Answer