... and all is not fresh in Sympy's realm either. Full details in [this ask.sagematjh.org question](https://ask.sagemath.org/question/64344/solving-a-system-of-linear-equations-with-complex-numbers-yields-false-solution/?answer=64363#post-id-64363).
TL;DR : a linear system, perfectly solved by Sage's default solver (i. e. Maxima's), gets a wrong answer when one of its variables is replaced by the `I` (*i*, imaginary unit) constant. The problem can be reproduced in `maxima` used standalone. (see referenced post). Furthermore, the same system (with *i*) seems to confuse `sympy` to no extend : `solve(Sys, IVars), algorithm="sympy")`doesn't return after more than 15 minutes, whereas the solution of the system with a variable instead of *i* is solved in a matter of milliseconds... Giac doesn't give an answer, and Fricas seems to return the same thing as Sage... Advoce requested on how to file tickets/bug reports efficiently. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/afec4c09-ad06-4bc7-81ec-8757195f756fn%40googlegroups.com.