Hi, I get this error:
*/home/sem/SageMath/src/sage/symbolic/expression.pyx in
sage.symbolic.expression.Expression.__call__
(/home/sem/SageMath/src/build/cythonized/sage/symbolic/expression.cpp:30500)()
5058 z^2 + x^y 5059 """-> 5060 return
self._parent._call_element_(self, *args, **kwds) 5061 5062 def
variables(self):/home/sem/SageMath/src/sage/symbolic/ring.pyx in
sage.symbolic.ring.SymbolicRing._call_element_
(/home/sem/SageMath/src/build/cythonized/sage/symbolic/ring.cpp:10778)()
894 d[ vars[i] ] = arg 895 except
IndexError:--> 896 raise ValueError("the number of
arguments must be less than or equal to %s"%len(vars)) 897
898 return _the_element.subs(d, **kwds)ValueError: the number of
arguments must be less than or equal to 0when plotting:*sage: plot3d(lambda
x,y:(exp(I*2000*(1.60217662*10**(-19))/((299792458*6.6260700
....:
*10**(-34)))-sqrt(I*(1.60217662*10**(-19))/(4*6.62607004*10**(-34)*2997924
....:
58*2000-((1.60217662*10**(-19))^2*2000**2)/((6.62607004*10**(-34))**2)**29
....:
9792458**2)))(x**2+y**2)).real_part(),(x,-3*pi,3*pi),(y,0,2),adaptive=True
....: , color=cmsel)
It appears that the brackets are right. Can any one comment?
Thanks
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