Question: In Matlab Assume x(t) = 2cos(4t). Create a plot with x(t - 2) in blue, x(2t) in red, and x(-t/2) in green. Which one is

In Matlab

Assume x(t) = 2cos(4t).

Create a plot with x(t - 2) in blue, x(2t) in red, and x(-t/2) in green.

Which one is a time shift, which one is a time scaling, and which is a time reversal?

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