Hi,
I am having issues with creating first and second ordered derivatives
for a function that includes bessel functions.
Psi = lambda r,z: (r*bessel_J(1, g*r))/(ro*bessel_J(1, gro))*cos(k*z)
I tried using derivative(Psi, r)
this is the error I get:
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (949, 0))
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/nooniensoong97/<ipython console> in <module>()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/calculus/functional.pyc in derivative(f, *args, **kwds)
132 pass
133 if not isinstance(f, Expression):
--> 134 f = SR(f)
135 return f.derivative(*args, **kwds)
136
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/structure/parent.so in
sage.structure.parent.Parent.__call__ (sage/structure/parent.c:7326)()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_ (sage/
structure/coerce_maps.c:3268)()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_ (sage/
structure/coerce_maps.c:3171)()
/home/nooniensoong97/programs/sage-4.7.2/local/lib/python2.6/site-
packages/sage/symbolic/ring.so in
sage.symbolic.ring.SymbolicRing._element_constructor_ (sage/symbolic/
ring.cpp:4418)()
TypeError:
I think it has to do with the lambda function causing this issue.
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