Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 1319 by johann.cohentanugi: constants left out in matching
d/dx(g(x)*dy/dx)
http://code.google.com/p/sympy/issues/detail?id=1319
Hello, here is the excerpt of my session:
In [29]: eq = diff(g(x)*f(x).diff(x),x)
In [32]: eq.match(g(x).diff(x)*f(x).diff(x)+g(x)*f(x).diff(x,x)+c)
Out[32]: {c: 0}
In [33]: eq.match(a*g(x).diff(x)*f(x).diff(x)+b*g(x)*f(x).diff(x,x)+c)
Out[33]:
For Out[33], I was expecting {a: 1, b:1, c: 0} but matching fails.
thanks,
Johann
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