[SciPy-dev] scipy.optimize.nonlin.broyden2

[argriffi]

This function solved my problem when I used 20 iterations, but when I 
used 40 iterations I got (nan, nan, nan).  I logged the successive 
points for which my function was evaluated, and the process seemed to 
have converged to the correct answer before suddenly deciding to give 
nans.  My current solution is to just use 20 iterations, but I would be 
interested to hear a safer solution.

Alex