Please write a code without using the "polyfit" command. Also, I tried the code below the question and it does not work. Please include a screenshot of the Editor window and Output window. Thanks.

**I've tried the below code several times and it does not work** %Hardcoded f f = chebfun('abs(x+.2)-.5*sign(x-.5) ','splitting','on'); %domain values a=-1;b=1-10^-6; r = polyfit(f,10,domain(a,b)); hold off, plot(f,'k',r,'r','linewidth',2) 

2) Write Matlab code to implement the continuous least squares method of finding the best-fit polynomial of degree n for a given function f on the interval a, b. Near the top of your program, hard code n, a, b, and f, where f should be a symbolic variable. Your output should be a picture, showing both the original function f and its least squares polynomial approximation, both only on the interval [a, b)