we took deez from gingerman thank you :D

power_model.m

@@ -0,0 +1,16 @@
+% power model a * x ^ b
+% y = a + b x
+clear;clc;close all;
+x = input("enter values of x:\n");
+y = input("enter values of y:\n");
+Y = log(y);
+X = log(x);
+n = length(x);
+coeff = [n sum(X);sum(X) sum(X.^2)];
+f_terms = [sum(Y);sum(X.*Y)];
+results = inv(coeff) * f_terms;
+A = results(1);
+a = exp(A);
+b = results(2);
+f = a * x.^b;
+plot(x, y,'', x, f);