I have:

and I want to minimize it on the unit square without using differentials.

I use the following code,

close all; clear; clc;
options = optimoptions(@fminunc,’Display’,’iter’,’Algorithm’,’quasi-newton’);
xy_guess = [0,0];
[xy_opt,fval] = fminunc(@quadratic,xy_guess,options)
function f = quadratic(in)
x = in(1);
y = in(2);

f = -5.*x – 5.*y + 10.*x.^2 + 2.*x.*y
f = 1/200.*(-1000.*x – 1000.*y + 400.*x.*y + 1200.*y.^2 + 5.*cos(30.*x) + 4.*cos(80.*x.^2) + 5.*cos(30.*y) + 4.*cos(80.*y^2))

But declaring f twice does not work. How should I declare this double-function as an input for fminunc ?

Thanks!I have:

and I want to minimize it on the unit square without using differentials.

I use the following code,

close all; clear; clc;
options = optimoptions(@fminunc,’Display’,’iter’,’Algorithm’,’quasi-newton’);
xy_guess = [0,0];
[xy_opt,fval] = fminunc(@quadratic,xy_guess,options)
function f = quadratic(in)
x = in(1);
y = in(2);

f = -5.*x – 5.*y + 10.*x.^2 + 2.*x.*y
f = 1/200.*(-1000.*x – 1000.*y + 400.*x.*y + 1200.*y.^2 + 5.*cos(30.*x) + 4.*cos(80.*x.^2) + 5.*cos(30.*y) + 4.*cos(80.*y^2))

But declaring f twice does not work. How should I declare this double-function as an input for fminunc ?

Thanks! I have:

and I want to minimize it on the unit square without using differentials.

I use the following code,

close all; clear; clc;
options = optimoptions(@fminunc,’Display’,’iter’,’Algorithm’,’quasi-newton’);
xy_guess = [0,0];
[xy_opt,fval] = fminunc(@quadratic,xy_guess,options)
function f = quadratic(in)
x = in(1);
y = in(2);

f = -5.*x – 5.*y + 10.*x.^2 + 2.*x.*y
f = 1/200.*(-1000.*x – 1000.*y + 400.*x.*y + 1200.*y.^2 + 5.*cos(30.*x) + 4.*cos(80.*x.^2) + 5.*cos(30.*y) + 4.*cos(80.*y^2))

But declaring f twice does not work. How should I declare this double-function as an input for fminunc ?

Thanks! fminunc, declare, function MATLAB Answers — New Questions

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