Need help with MATLAB code. Submit function and plot of result.

[a] 1-D Rect function where y=rect(bxa)={1bxa210otherwise}. This is a very important and useful function as we shall see. It basically is a unit amplitude transmittance function. a defines the decentering and b defines the width. It is an easy function to make, but it requires some thought. For example, what happens when the center point is outside the defined range? What happens when the width exceeds the defined range? How do you handle even width rect function vs odd width? All these must be checked for prior to creating the result. Try the following: x=256:1:256 and a=25,b=150