Plot the magnitude Fourier transform (Frequency continent) of the following signals: (5 Marks) 1- y= 8(t) cos(320t) 2- y2 (sin (519t)| 3sin(150t) 3- y3 = 4t h Q3) Write a MATLAB code to create x,y and z; where: 1- X is a vector contains the numbers divisible by 3 of H. 2- Y is a vector contains the numbers divisible by 7 of H. 3- Z is a vector contains the other numbers. Where: H=7.9* magic (105) (5 Marks)