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linsolve gives odd result if symbols are duplicated #23855

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smichr opened this issue Jul 29, 2022 · 1 comment · Fixed by #23872

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good first issue solvers

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smichr commented Jul 29, 2022

>>> linsolve([x-1],x)
{(1,)}
>>> linsolve([x-1],x,y)
{(1, y)}
>>> linsolve([x-1],x,x)
{(x + 1, x + 1)}  <---------- ?

smichr added solvers good first issue labels

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smichr commented Jul 30, 2022

first issue hit: see nonlinsolve and raise an error for duplicate symbols in the same way

skirpichev added a commit to diofant/diofant that referenced this issue


          Add regression test

c055d24

Closes sympy/sympy#23855

smichr mentioned this issue

linsolve raises for dup symbols #23872

Merged

oscarbenjamin closed this as completed in #23872

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