Comment #21 on issue 694 by smichr: Add tests from "Review of CAS mathematical capabilities", by Michael Wester http://code.google.com/p/sympy/issues/detail?id=694
What is it that is not being worked on...the tests or this particular test? As far as this solution "filling a screen", that is no longer the case. Solutions don't simplify down to zero, however: >>> l=[];s=solve(x**4+x**3+x**2+x+1,x) >>> for si in s: ... l.append(simplify(si)) ... >>> l [-1/4 - 5**(1/2)/4 + (-40 + 8*5**(1/2))**(1/2)/8, -1/4 + 5**(1/2)/4 + (-40 - 8*5**(1/2))**(1/2)/8, -1/4 - (-40 - 8*5**(1/2))**(1/2)/8 + 5**(1/2)/4, -1/4 - 5**(1/2)/4 - (-40 + 8*5**(1/2))**(1/2)/8] >>> for si in s: ... print simplify((x**4+x**3+x**2+x+1).subs(x,si)) ... 5*(-40 + 8*5**(1/2))**(1/2)/64 - 5*5**(1/2)*(-40 + 8*5**(1/2))**(1/2)/64 - 5**(1/2)*(-40 + 8*5**(1/2))**(3/2)/512 5*(-40 - 8*5**(1/2))**(1/2)/64 + 5*5**(1/2)*(-40 - 8*5**(1/2))**(1/2)/64 + 5**(1/2)*(-40 - 8*5**(1/2))**(3/2)/512 -5*(-40 - 8*5**(1/2))**(1/2)/64 - 5*5**(1/2)*(-40 - 8*5**(1/2))**(1/2)/64 - 5**(1/2)*(-40 - 8*5**(1/2))**(3/2)/512 -5*(-40 + 8*5**(1/2))**(1/2)/64 + 5*5**(1/2)*(-40 + 8*5**(1/2))**(1/2)/64 + 5**(1/2)*(-40 + 8*5**(1/2))**(3/2)/512 But the solutions are numerically correct: >>> for si in s: ... print N(((x**4+x**3+x**2+x+1).subs(x,si))) ... .0e-126 + .0e-125*I .0e-125 + .0e-126*I .0e-125 - .0e-126*I .0e-126 - .0e-125*I -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-iss...@googlegroups.com. To unsubscribe from this group, send email to sympy-issues+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.
