The issue is that you have a nested power. x**a**b != x**(a*b) in general (see http://docs.sympy.org/latest/tutorial/simplification.html#powers), so SymPy doesn't simplify this automatically.
The solution should be to use powdenest, but it seems that powdenest(force=True) is not working for me. So this is a bug. I opened https://code.google.com/p/sympy/issues/detail?id=4022 for it. Aaron Meurer On Tue, Sep 10, 2013 at 4:59 AM, Boris Kheyfets <[email protected]> wrote: > Ho do I cancel expression in a denominator: > > 2/3 > -8⋅2 > ───────────────────────────────────── > 7/4 > 3 ___ 22/3 ⎛ 1 ⎞ > 3⋅╲╱ ν ⋅(yᵢ - 1) ⋅⎜───────────⎟ > ⎜ 8/3⎟ > ⎝(yᵢ - 1) ⎠ > > Expression: > > -8*2**(2/3)/(3*nu**(1/3)*(y_i - 1)**(22/3)*((y_i - 1)**(-8/3))**(7/4)) > > -- > 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. > For more options, visit https://groups.google.com/groups/opt_out. -- 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. For more options, visit https://groups.google.com/groups/opt_out.
