Updated fsolve to work with arrays, as it's documented to do.

Bogidon · Bogidon · commit 5541863df2ce · 2017-11-29T01:38:18.000-05:00
Handeled it the same way Scipy does: https://github.com/scipy/scipy/blob/11509c4a98edded6c59423ac44ca1b7f28fba1fd/scipy/optimize/minpack.py#L208.
diff --git a/code/modsim.py b/code/modsim.py
@@ -347,6 +347,8 @@ def fsolve(func, x0, *args, **kwargs):
     returns: solution as an array
     """
     # make sure we can run the given function with x0
+    x0 = np.asarray(x0).flatten() 
+    
     try:
         func(x0, *args)
     except Exception as e:
