Block matrices product using symmatrix type

Question

Angelo Cacini 2021-4-9

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/797617-block-matrices-product-using-symmatrix-type

评论： Angelo Cacini 2021-4-21

Hello,

I’m exploring the new type symmatrix. I’ve tried the following code and I expected to obtain the same result (i.e. ans1 == ans2), but this is not the case.

Where I’m wrong ?

Many thanks in advance.

Regads,

Angelo

syms A [2 2] matrix
syms B [2 1] matrix
syms C [2 2] matrix
syms D [2 1] matrix
F = [A, B; zeros(1,2), zeros(1,1)]
G = [C, D; zeros(1,2), eye(1)]
ans1 = symmatrix2sym(G*F)
syms A [2 2] 
syms B [2 1] 
syms C [2 2]
syms D [2 1]
F = [A, B; zeros(1,2), zeros(1,1)]
G = [C, D; zeros(1,2), eye(1)]
ans2 = G*F