I was doing some matrices calculation, but got some problem. What I had is
a simple matrix:
A = (1,2\2,1)
and if I do B = inv(A), I got the correct matrix; if I do B = syminv(A),
I got the following:
. mat A = (1,2\2,1)
. mat list A
symmetric A[2,2]
c1 c2
r1 1
r2 2 1
. mat iA=syminv(A)
. mat list iA
symmetric iA[2,2]
r1 r2
c1 1
c2 0 0
Is there some reason why?
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