# Revision history [back]

This is one of the problems you're having:

sage: ff(scipy.array([1,1]))
TypeError: no canonical coercion from <type 'numpy.int64'> to Symbolic Ring


Which can be remedied as such:

sage: ff(scipy.array([1.,1.]))
2


But this merely exposes another problem:

sage: scipy.optimize.fsolve(ff, scipy.array([1.,1.]))
TypeError: There is a mismatch between the input and output shape of ff.


And I don't know how to solve that one.