12 For this section of MATLAB code answer the following ques

12. For this section of MATLAB code, answer the following questions (1 point each) t l-4:0.005:6]; a. What does the a() represent? b. What is the purpose of (t> 00& (t

Solution

(A) it is a function

(B)y= (t>=0) &(t<=1)

It is logical AND operation , its value is 1, when both condition is satisfied, otherwise 0

(C)

(D) .* represent element wise multiplication,

(13)a signal x(t) is called baseband signal whose

Fourier transform x(w) is non zero for |w|<wc.

That i . X(w)= non zero , |w|<wc

= 0, otherwise

(14) vo= output voltage

Vi= input voltage.

At 3 db point, Vo= vi/2

Vo= 0.707 vi

Vo/vi= 0.707

(b) is correct