Error matrix Dimensions must agree

a=1.2;
x=-a:(2.4/128):a;
[h,k]= meshgrid(-4:0.01:4,0:0.01:11);
y = ((k.*x)./(minus(h,(sign(minus(x,h)).*a)))) + ((k.*a)./(minus(a,(sign(minus(x,h)).*h))));
plot(x,y)

[KSSV]

Check the size of x, it is different from h, k.

[wided hechkel]

Thank you very much. Yes, I know it different , but I don't know how can I simulate it. Please have a look at the two pdf attached were the problem is clarified and give me please your remarks!