Trying to solve a simple linear system of equations (2 equations) using the roots() function gave me the error message "No real roots", but changing the order of the elements of one of the equations, solved it.


I know this is not so important, but it was interesting to see how SMath`s functions behaves.

Confirmed,

It seems some bug is here.

FindRoot() from Nonlinear Solvers plugin will work well here


[MATH=eng]FindRoot(mat(A+B-108,2*A-3*B-156,2,1),mat(A≡0,B≡0,2,1))=mat(96,12,2,1)[/MATH]

Regards,
Radovan

Symbolic optimization fails to recognize the difference of the equivalent expresions to zero in one step. If the result is taken and again symbolically optimized, then zero is identified. Perhaps an internal workaround for such problems could be to repeatedly apply symbolic optimization until there are no more changes.

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roots.sm (17 KiB) downloaded 117 time(s).