Hi Tim, Thank you! I did try that, but it still hang there...
from sympy.abc import x, y, z, a, b, c from sympy import solve, solve_poly_system solve_poly_system([x+y+z-a, x*y+y*z+x*z-b, x*y*z-c], [x, y, z]) In fact, I had the impression that when I used the keyboard to interrupt the solve() earlier today, it showed it is trying to use the polynomial solver. Shawn On Monday, November 24, 2014 9:13:46 PM UTC-5, Tim Lahey wrote: > > Hi, > > You might try the polynomial module solve support. See, > > http://docs.sympy.org/latest/modules/polys/basics.html#solving-equations > > Cheers, > > Tim. > > On 24 Nov 2014, at 20:26, Yuxiang Wang wrote: > > > Hi all, > > > > I have this equation, which is Vieta's formula and is polynomial. > > > > SymPy code: didn't work... just hang there > > > > from sympy.abc import x, y, z, a, b, c > > from sympy import solve > > > > solve([x+y+z-a, x*y+y*z+x*z-b, x*y*z-c], [x, y, z]) > > > > Mathematica worked. > > > > Solve[{x + y + z == a, x y + y z + x z == b, x y z == c}, {x, y, z}] > > > > I do know the answer of this equation, but I was wondering... this > > seems to > > be a question that should work in sympy because it does not appear too > > difficult to me - only polynomials. Any thoughts? > > > > > > Shawn > > > > -- > > You received this message because you are subscribed to the Google > > Groups "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > > an email to [email protected] <javascript:>. > > To post to this group, send email to [email protected] > <javascript:>. > > Visit this group at http://groups.google.com/group/sympy. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/sympy/8e42eaf3-da4e-47ff-b98b-df46d1fcf2d2%40googlegroups.com. > > > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/ea90bce7-cca7-442e-a6e8-d95450c92c22%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
