Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium Simplify
New issue 2998 by [email protected]: collect doesn't process powers with
float coeff in exponent
http://code.google.com/p/sympy/issues/detail?id=2998
collect(a*y**(2.*x)+b*y**(2.*x),y**(x))
a*y**(2.0*x) + b*y**(2.0*x)
This should be the same as
collect(a*y**(2*x)+b*y**(2*x),y**(x))
(a + b)*(y**2)**x
(except for the issue of issue 2997)
The code in parse_terms has the option to process non-Rational coefficients
in the exponent, but the method as_coeff_mul() is used (which always
returns a Rational for coeff) instead of the method as_coeff_Mul() (which
always returns a Number -- not necessarily Rational) for coeff. So the code
should work, it just needs to use the other method.
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