You can check your result using MATLAB and the conv command as follows: (you don't have to hand in your MATLAB check)
>> h = [1.5, 1.5, 1.5]; >> x = [2, 2, 2, 2, 2]; >> y = conv(x, h); >> n = 0:length(y)-1; >> stem(n, y)
Please refer to Homework 10 for a note about on-line help in MATLAB.
Thank you.