On Wed, Jan 11, 2012 at 7:21 AM, Olivier Grisel <[email protected]>wrote:
> Just a followup: > > Apparently sympy (0.7.1) is unable to find an expansion of the real part > of the root that interests me: it yields a RuntimeError: > > >>> sp.expand(sol, complex=True) > > => RuntimeError: maximum recursion depth exceeded while calling a Python > object > > Apparently wolframlapha is able to find a something interesting in terms of > phase: > > > > http://www.wolframalpha.com/input/?i=Re[-%28%281%2Bi+sqrt%283%29%29+d%29%2F%284+%28d > ^3-48+d^2+log%28n%29%2B4+sqrt%286%29+sqrt%2824+d^4+log^2%28n%29-d^5+log%28n%29%29%29^%281%2F3%29%29-%28%281-i+sqrt%283%29%29+%28d^3-48+d^2+log%28n%29%2B4+sqrt%286%29+sqrt%2824+d^4+log^2%28n%29-d^5+log%28n%29%29%29^%281%2F3%29%29%2F%284+d%29%2B1%2F2] > > I wonder whether the fact that sympy is crashing with a recursion depth > exceeded is a bug or this a consequence of a missing algorithm only found > in mathematica. Could you post the sympy imput because I get: >>> -(1+I*sqrt(3))*d/(4*d) -1/4 - sqrt(3)*I/4 >>> re(_) -1/4 -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
