FMINUNC cannot continue.

Hi, I'm trying to learning fminunc, but it gives errors: 'Insufficient number of input parameters' and 'Failure in initial user-supplied objective function evaluation. FMINUNC cannot continue.'

The cose is as following. I have saved the function Pun as a separate file.

Help please?

function f = Pun(x,lamda)
f = x(1)^2 + lamda * x(2)^2;
end

x = [0.5;0.5];
lamda = 0.5;
fminunc('Pun',x,lamda) 

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/math/parameterizing-functions.html

[Anyang He]

Thank you very much. I solve the problem by using Nested Functions.

[Walter Roberson]

fminunc(@(x) Pun(x,lamda), x)