Status: Valid
Owner: ----
Labels: Type-Defect Priority-Medium NonCommutative Simplify
New issue 3369 by [email protected]: Simple trigonometric
simplification and noncommutative symbol
http://code.google.com/p/sympy/issues/detail?id=3369
Simple trigonometric simplifications are not done when the expressions
contain a noncommutative symbol.
In [1]: M=Symbol('M', commutative=False)
Works fine:
In [2]: simplify(x*cos(y)**2+x*sin(y)**2)
Out[2]: x
Needs to be improved:
In [3]: simplify(M*cos(y)**2+M*sin(y)**2)
Out[3]: sin(y)**2*M + cos(y)**2*M
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