title: Determine the length of the filtered signal w[n], and explain how its length is related to the length of x[n] and the length of the FIR filter
body: <p>Determine the length of the filtered signal w[n], and
  explain how its length is related to the length of x[n] and the length of the FIR filter.
  How do we determine the length of the filtered signal?<a href="https://i.stack.imgur.com/KFDIN.png" rel="nofollow">enter image description here</a></p>