a. Write a MATLAB code that Generates two analog Signals y1= 2sin (2t) and y2=3sin (34t) at the time interval of t = -2:7 with linspace accuracy=1000 and perform the following operations on it.. Plot y1, y2 and y1*y2 (1figure, one Subplot (3X1)) and use the command axis to orient the subplot in a good position. b. For a Communications system with capacity of 40000 bps and SNR = 30dB and a lower frequency of 250Hz find the Upper frequency?