Status: New
Owner: ----
Labels: Type-Enhancement Priority-Medium
New issue 4120 by [email protected]: Make Laplace transform work on
undefined functions
http://code.google.com/p/sympy/issues/detail?id=4120
Example:
In [2]: x = Function('x')
In [3]: from sympy.abc import s
In [4]: laplace_transform(x(t).diff(), t, s)
Out[4]: LaplaceTransform(Derivative(x(t), t), t, s)
I expected s * x(s).
The inverse doesn't work either:
In [5]: inverse_laplace_transform(s * x(s), s, t)
Out[5]: InverseLaplaceTransform(s*x(s), s, t, _None)
Aaron Meurer suggested either to implement a table lookup for some simple
rules and properties or to just make the Integral work.
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