FMINUNC cannot continue.
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Hi, I am learning to use Matlab. I've copied below mentioned function from Matlab help and it is supposed to give me solution of (x) and value of function at (x). But when I run this (I provide input x=[2 2]) matlab gives me an error message.
"Failure in initial user-supplied objective function evaluation. FMINUNC cannot continue."
The function is shown below.
function [ f ] = myfun( x )
f = 3*x(1)^2 + 2*x(1)*x(2) + x(2)^2; % Cost function
x0 = [1,1];
[x,fval] = fminunc(@myfun,x0)
end.
Please help.
采纳的回答
Grzegorz Knor
2011-11-14
You have to save your function myfun in separate file myfun.m
function [ f ] = myfun( x )
f = 3*x(1)^2 + 2*x(1)*x(2) + x(2)^2; % Cost function
end
And then execute commands:
x0 = [1,1];
[x,fval] = fminunc(@myfun,x0)
Or simpler (in one line without additional file):
[x,fval] = fminunc(@(x)3*x(1)^2 + 2*x(1)*x(2) + x(2)^2,[1 1]);
See also:
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