Question

***Please solve on MATLAB:***

Consider the signal x(t) = 2−tu(t), where u(t) is
the unit step function.

a) Plot x(t) over (−1 ≤ t ≤ 1).

b) Plot 0.5x(1 − 2t) over
(−1 ≤ t ≤ 1).

Answer 1

(a)

% Code to plot the signal x(t) = 2-tu(t), where u(t) is unit step function

% We will use heaviside function for unit step function

% Part (a) for -1<= t <=1

t = -1:0.1:1;

x = 2 - t.*(heaviside(t));

plot(t,x, 'linewidth', 2)

(b)

% Code to plot the signal 0.5x(1-2t) over -1<= t <=1

t = -1:0.1:1;

x = 2 - t.*(heaviside(t));

plot(t, 0.5*x.*(1 - 2.*t))

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*NOTE: Drop comments for queries.