hello group,
i'm calculating the condition numbers of a matrix (wxmaxima 5.11.0):
(%i1) load("linearalgebra");
(%i2) B: matrix([3,4],[4,5]);
(%i3) mat_cond(B,1); --> 84
(%i4) mat_cond(B,inf); --> 84
which should be 24.
I was surprised and calculated the matrix norm (which was also 'wrong')
and also
(%i5) B^^-1; --> [ 5 -3]
[-4 3]
which I expected to be 1/3* above.
Is there some 'default setting' behind the scene I am missing?
Please, What have I to do to get the right results?
--
HTH Wolfgang