roblem 4. (20 pts) Write the signal () = 3 3 cos(2) sin(2) sin(3) 1 2 cos (5 3 ) In the following form () = cos(0 ) =0 For this purpose you need to a) (5 points) Find 0. b) (5 points) Find N. c) (5 points) Find coefficients {An}. d) (5 points) Find phase values {n