matlab3

function wynik = minX(y)
%UNTITLED3 Summary of this function goes here
%   Detailed explanation goes here
stala = y;
f=@(x) 2.*x.^2+stala.^2+x.*stala-6.*x-5.*stala+8;
%x = -5:0.1:5;
a = -5;
b = 5;
e = 0.000001;
x1=a+0.382*(b-a);
x2=a+0.618*(b-a);
while (b-a)>e
if (f(x1)<f(x2))
    b=x2;
else
    a=x1;
end
x1=a+0.382*(b-a);
x2=a+0.618*(b-a);
end;
wynik=(a+b)/2;

end