Question

1.On the graph below, make a neat and labeled sketch of the signal s(t) = 2 + cos( t/4 + 1 ),Describe s(t) as odd, even, or neither. What is the energy in s(t)? What is the power in s(t)?

2.On the graph below, make a neat and labeled sketch of the signal s(t) = 3 rect( t - 2 ) cos( π t ),Describe s(t) as odd, even, or neither. What is the energy in s(t)? What is the power in s(t)?

2.On the graph below, make a neat and labeled sketch of the signal s(t) = 3 rect( t/4 + 1 ),

3.On the graph below, make a neat and labeled sketch of the signal s(t) = 3 cos( 2 π t/4 + π )

4.Evaluate the integral −∞ +∞ ∫δ (t + 1 2 ) cos(2πt) dt and explain your work.

Answer 1

1.Ans)

The plot of

as the signal is neither even nor odd

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Energy is given as

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The period of signal is

Power is given as

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