2. Circular convolution
Let $x = [2, -1, 3]$ and $h = [4, 1, -1]$.
(a) Find the (linear) convolution of $x$ and $h$. And, write the linear convolution as a Toeplitz matrix multiply
(b) Use Matlab to evaluate $ifft(fft(x,N).*fft(h,N))$
i. For $N = 3$.
ii. For $N = 4$.
iii. For $N = 5$.
iv. For $N = 8$.
(c) Compare and contrast the results from parts (a) and (b); what to you observe?