Comment #24 on issue 111 by [email protected]: Simplification of trig
expressions
http://code.google.com/p/sympy/issues/detail?id=111
There are several trig patterns that are not working:
for e, j in matchers_add: # matchers_add is defined in simplify.py
... e = e.subs({c:1, a:2, b:3, d:0})
... print e, trigsimp(e)
...
sin(2)*cos(3) + sin(3)*cos(2) sin(5) <= ok
-sin(2)*sin(3) + cos(2)*cos(3) -sin(2)*sin(3) + cos(2)*cos(3)
sin(2)*cos(3) - sin(3)*cos(2) 2*sin(2)*cos(3) - sin(5) <= alternate form
sin(2)*sin(3) + cos(2)*cos(3) sin(2)*sin(3) + cos(2)*cos(3)
sinh(2)*cosh(3) + sinh(3)*cosh(2) sinh(5) <= ok
sinh(2)*sinh(3) + cosh(2)*cosh(3) sinh(2)*sinh(3) + cosh(2)*cosh(3)
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