Answer Happy

I wanna know the no3, no4 question.
Also I wanna accurate answer so plz answer the question in
detail. (especially no4's reason!)
I will rate asap and plz write the answer in typing, not
handwriting.
Problem. Implement your own Matlab or Python code. Then, fill in the code, plot and discussion part. Libraries related to convolution should not be used and must be implemented based on formulas. rect[n] = [0,0,0,1,1,1,0,0,0),(-4 51 < 4), where n is integer r[n] = [0,0.5,1,1.5,2), (0 51 < 4), where n is integer 1. Define and plot (sketch) rect[k] and r[k] along the k axis (horizontal axis). 2. Plot (sketch) rect[n - k] and r[n - k] along the k axis (horizontal axis) = k 3. Compose the code to implement yi[n] = =- rect(k)r[n-k], and plot (sketch) y.In).(-4 <n<8) along the n axis (horizontal axis) 4. Check the sketch results of y. [n] and yz[n] = EK-(k)rect [n – k] and explain why they are the same or different