Issue 1181: Advanced trigonometric simplification
http://code.google.com/p/sympy/issues/detail?id=1181
Comment #1 by [EMAIL PROTECTED]:
The following code worked for the cases in comment 1. I don't know if it
would work
if there are more than two (theta and phi) trigonometric variables.
def TrigSimp(f):
(w,g) = cse(f)
g = trigsimp(g[0])
for sub in reversed(w):
g = g.subs(sub[0],sub[1])
g = trigsimp(g)
return(g)
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