Error - not enough input arguments

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Khubaib
Khubaib 2012-9-30
Hello,
I wrote a function x3.m as follows:
function [ y ] = x3( x )
y=abs(x).^3;
end
Now I want to find the minimum of this function using fminunc.m with the initial value of 2. So I type this in the command window:
a=fminunc(x3,2)
But it returns the following error:
Error using x3 (line 4) Not enough input arguments.
Can anyone please tell me what the problem is with my code? Any help would be greatly appreciated.
Thanks, Khubaib

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采纳的回答

Wayne King
Wayne King 2012-9-30
x3 should be entered as a function handle.
a=fminunc(@x3,2)
Or in this case:
a = fminunc(@(x) abs(x)^3,2);

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