On Sun, Jul 12, 2015 at 7:46 PM, G B <[email protected]> wrote: > What would case Eq.simplify() to return False? There isn't a lot of > computation time before the result.
Can you show an example of what is doing this? > > Also why would using together() before substituting an expression lead to a > numerically different result? How different? It's possible you are changing the numerical stability of the expression. Or it's possible there is a bug in together. Aaron Meurer > > I have a series of equations that I've been substituting in to each other > building up a final symbolic result. My first pass at this gave a result > that looks reasonable (though I haven't proven it correct) when I convert it > to a numpy function after using > Eq.subs(dictionary of values for symbols).simplify().n() > and plot it. > > When I took the last symbolic equation to be substituted and use > Eq.together() on it before substituting to get a simpler result, the > Eq.subs().simplify() returns False. When I manipulate it differently to get > it to successfully lambdify, the resulting plot is different (and appears > wrong). > > 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/1c324cfc-6bb3-4951-8cd7-22394a8c4bcd%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%3D6JwOrGG84jxWe%3D0%3DsaKRmg8s%2BFE7WpRN5mSO%3D2PP-QZLg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
