roots() bug with a simple linear system of equations - roots() returns "not real roots" - Mensajes
#1 Publicado: 23/6/2013 21:15:46
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.
I know this is not so important, but it was interesting to see how SMath`s functions behaves.
Ecuadorian Electronic engineer and MBA student at Salesian Polytechnic University.
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#2 Publicado: 24/6/2013 1:28:09
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
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
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
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#3 Publicado: 25/6/2013 4:06:19
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.
roots.sm
roots.sm
Technische Mechanik mit SMath Studio: https://link.springer.com/book/10.1007/978-3-658-50592-9
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