Comment #9 on issue 357 by smi...@gmail.com: trigonometric rewriting
http://code.google.com/p/sympy/issues/detail?id=357
The rewriting rules of Fu are now implemented in
https://github.com/sympy/sympy/pull/1737
from sympy.simplify.fu import *
TR8(sin(x)*cos(y))
sin(x - y)/2 + sin(x + y)/2
Comment #10 on issue 357 by asmeu...@gmail.com: trigonometric rewriting
http://code.google.com/p/sympy/issues/detail?id=357
These need a more user-friendly API.
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Comment #7 on issue 357 by jrez...@gmail.com: trigonometric rewriting
http://code.google.com/p/sympy/issues/detail?id=357
Guys, it very good and useful feature, please implement it.
Fox example Maple has function 'combine', which try to decrease power of
trigonometric expressions, it used