# User Portlet

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I define a function f[z_, c_] := (z^2) + c I evaluate it: In[9]:= f[3 + I, -1] Out[9]= 7 + 6 I Now, I want to iterate it 5 times starting from the value 1 : I do: NestList[f, 1, 5] But I don't see a list of numeric...
I upgraded to Mathematica 12.0.0.0 Now where I execute cells in my notebooks I get \$Failed. These are notebooks that worked well in the previous version I try to follow this: http://support.wolfram.com/kb/19213 It says: Download the new...