Can someone explain why I am getting the error "Not enough input arguments (line 2)"?

function f = fun( x )
f = 4./x(1)+9./x(2)+(x(1)+x(2));
end

function [ c,cequ ] = mycon( x )
c=[-x(1);
 -x(2);
 x(1)+x(2)-4];
cequ=[];
end

function myfun
x0=[1;1];
[x,f]=fmincon(@fun,x0,[],[],[],[],[],[],@mycon)
z=peaks;
surf(z);
end

Answer 1

[Stephan]

x0=[1;1];
[x,f]=fmincon(@fun,x0,[],[],[],[],[],[],@mycon)
z=peaks;
surf(z);


function f = fun( x )
f = 4./x(1)+9./x(2)+(x(1)+x(2));
end

function [ c,cequ ] = mycon( x )
c=[-x(1);
 -x(2);
 x(1)+x(2)-4];
cequ=[];
end