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 Author Comment/Response Bill Simpson 10/14/12 4:18pm In[1]:= z:=x+I*y; f[z_]:=z^2+3*z+2 D[f[z],x] Out[3]= 3+2(x+I y) f[z_]:= defines a function f that takes a single argument of any kind. That z_ says that you want to name that argument z while inside the definition of the function and the _ says this will match any single expression. What you had then done is tried to use f[x,y] which looks like a function f that takes two arguments, x and y. But you had not defined a function f that accepted two functions, so it did nothing. Read through this http://reference.wolfram.com/mathematica/tutorial/DefiningFunctions.html and see if it makes a little more sense URL: ,

 Subject (listing for 'partial derivative of complex function') Author Date Posted partial derivative of complex function David Eagle 10/13/12 8:28pm Re: partial derivative of complex function Bill Simpson 10/14/12 4:18pm
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