[Scilab-users] ./ Operator Question

[Dang, Christophe]

Hello,

> De Santiago Chialvo
> Envoyé : samedi 27 septembre 2014 01:20
>
> when I do the operation
>
>R = A/B;
> [...]
> R(1)*B(1) + R(2)*B(2) .... + R(N)*B(N) = A;
>
> [...] but it's only 1 equation with N unknowns!

Maybe the solution is in the help page:
http://help.scilab.org/docs/5.5.0/en_US/slash.html

" If the condition number of A is smaller than 1/(10*%eps) [...], the LU factorization with row pivoting is used. If not[...], then X is the minimum-norm solution which minimizes ||A*X-B|| using a complete orthogonal factorization of A (i.e. X is the solution of a linear least squares problem)."

--
Christophe Dang Ngoc Chan
Mechanical calculation engineer
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