SBiNLab
run bywith: ''' <source lang="python">$ python sympy_test.py'''</source>
{{collapsible script| type   = Python script| title  = The <source code>sympy_test.py</code> script.| lang  = python| script ="Python">
# Tutorial from: http://scipy-lectures.github.io/advanced/sympy.html
from sympy import Function, hessian, pprint
f = Function('f')(r2eff, i0)
 </source>}}
== Tutorial with quadratic chi2 function ==