2. Write the z-transform of the two functions below: x[n]=28[n]+38[n1]+58[n2]h[n]=0.258[n]+0.58[n1]+0.258[n2) 3. Cruate row vectors with the coeffieients of the inpot x[n] and impulse response h[s] above. Calculate the output of the system using the function you created in step 1 . Write the result below. 4. Suppose that the length of x is nx and the length of vector b is nh. What is the length of the coavolution of the two seqaences? DIGITAL SIGNAL PROCESSING LABORATORY 3/F 5. Write a MATLAB script to generate and plot the following signals described in Section 2.1 for 20 sinste a. unit sample (n). h. anit step u[n]. f. real exponential signal x4[ n ]=(0.7). d. complex exposential signal xza=(0.7eit+iyt. Use the subplot command to plot the real part, imaginary part, magnitude and phase separately. e. sinusoldal signal xy[n]=2cos[2n(03)n+m/5]