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  3. problem sinusoidal signal xta cosot 20 10 10...

Question: problem sinusoidal signal xta cosot 20 10 10...

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PROBLEM Sinusoidal Signal: x(t)-A cos(ot + ф) 20 10 10 20 0.1 -0.05 0.05 0.1 .15 0.2 025 0.3 0.35 0.4 t time in sec) Answer to part (c): y(t) 6 x(t+0.1) 150 100 50 -50 100 10.05 0.05 0.1 0.2 0.25 0.3 0.35 0.4 t(time in sec) (a) The above figure shows a plot of a sinusoidal wave x(t). From the plot, determine the values of A ab, and-π < φ < π in the representation x (t) = A cos(a01+ φ) Where appropriate, be sure to indicate the units of the sinusoidal signal parameters. (b) The signal x(f) in part (a) can be written as the real part of a complex exponential. Determine Z for the complex signal z(t) = Zejaot such th (c) Sketch the signal y(t) = 6x (1+0.1), where x(1) is the signal from part (a). Use the axes provided above or make your own axes covering the same time interval.

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