What's the meaning of mmult in matlab

for function out = mmult(mat1,mat2) Both matrices(mat1,mat2) must have the same dimensions and How to Multiply؟ The program is as follows:

num=[0 -2.575 5.15]
den=[0.9 2.3 1]
[a,b,c,d]=tf2ss(num,den)
G=[a b;c d]
*G_l = sel(G,3,2)*

nuw1 = [1 9.6];
den1 = [1 0];
gainw1 = 0.0196;
*w1 = nd2sys(nuw1,den1,gainw1);* 

*sysGW = mmult(G_l,w1);*

Thanks for the help you.

Answer 1

[Azzi Abdelmalek]

Look at the help

    out = mmult(mat1,mat2,mat3,...,matN)

    Multiplies SYSTEM/VARYING/CONSTANT matrices, currently
    limited to 9 input arguments

    out = mat1*mat2*mat3* *** *matN

[reza zarei]

thanks for help me.

Answer 2

[James Tursa]

You might also look at this FEX submission by Bruno Luong:

http://www.mathworks.com/matlabcentral/fileexchange/27950-mmtimes-matrix-chain-product