Comment #10 on issue 3732 by [email protected]: Integration of Piecewise
function should also be continuous
http://code.google.com/p/sympy/issues/detail?id=3732
Ok, So I was wrong.
All integral transforms for Piecewise should work correctly in sympy
because they finally reduce to a Definite integral, which is solved
correctly. The above fourier_transform of sin(pi*x)/(pi*x) is wrong in
0.7.2 release, but seems to have been corrected in the current development.
One last thing before closing this issue, shouldn't we return nan while
differentiating at discontinuities?
Currently,
from sympy import *
x = symbol('x')
q = Piecewise((0, x <= -1), (x, x < 0.5), (0, True))
diff(q,x)
Piecewise((0, x <= -1), (1, x < 0.5), (0, True))
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