how can i write a M-file which it calculates sum of squares of data differences for Gauss Newton Method?

hi, i need some help to do my homework. x and y will be used for Gauss Newton method. y represents experimental values and yk represents theoretical values. here, i wrote them in matrice form.

I must find that; c=sum(y-yk)^2

x= [-3, -2, -1, 0, 1, 2, 3]

y= [14, 16, 18, 19, 21, 24, 28]

yk= 19 + 2*x + 0.2 * x^2

can you write a function about this on m-file?

[John D'Errico]

Yes, I can. But this is your homework, and it seems you have made no effort. Try something.