Question

I need this question answered by sketching the graph by hand then plotted using matlab. It...

I need this question answered by sketching the graph by hand then plotted using matlab. It is for a signals and systems course

Sketch the continuous-time signals.

x(t) = cos(t) *[(u(t+(pi/2)) - 2u(t - pi)] + (cos(t)) * u(t - (3*pi/2)

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Homework Answers

Answer #1


Matlab code:

t=-pi:0.001:2*pi;
x=(cos(t).*(t>=-pi/2))-(2.*cos(t).*(t>=pi))+(cos(t).*(t>=3*pi/2));
plot(t,x)

The output is,

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