Use expand() and collect(), like collect(expand(expr), u). Aaron Meurer
On Tue, Dec 9, 2014 at 5:28 PM, Paul Royik <[email protected]> wrote: > What function should I use to rewrite 2/(a*(u**2 + 1) - b*(u**2 - 1)) into > 2/((a-b)*u**2+(a+b))? > > > Thanks. > > -- > 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/86982404-4901-4fe3-8a24-0273cc6e80f1%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/CAKgW%3D6%2BmG8v5-jqQsBCPWpemU3TaaAUTD9QdP8PHSq-EnyG%3D4w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
