Question 4 [9 Marks 3 +3 +3] A. Use the ft and ift functions in Matlab to determine y[n]. where, y[n] =x(n-h[m]. is the convolution operator, h nj-G).cos()u[n]-161 2nn Determine y[n] using the discreteconvolve.m function which was used in your ELEC240 Practical. The two methods should give identical results). B. C. What is the length of the sequence y[n]=x[n]*h[n]? Plot x[n], h[n], and y[n] using the stem function in MATLAB. Question 4 [9 Marks 3 +3 +3] A. Use the ft and ift functions in Matlab to determine y[n]. where, y[n] =x(n-h[m]. is the convolution operator, h nj-G).cos()u[n]-161 2nn Determine y[n] using the discreteconvolve.m function which was used in your ELEC240 Practical. The two methods should give identical results). B. C. What is the length of the sequence y[n]=x[n]*h[n]? Plot x[n], h[n], and y[n] using the stem function in MATLAB