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Unformatted text preview: (b) the signal in igure E43 as a sum of shifted semicircles. 4. or each of the following functions, decide whether it is periodic and, if it is, Fnd the fundamental period. (a) g ( t ) = 14 + 40 cos(60 t ) (b) g ( t ) = 28 sin(400 t ) + 12 cos(500 t ) (c) g ( t ) = sin(3 t ) + cos(5 t-3 4 ) 5. Compute: (a) the energy of the signal x ( t ) = 2rect( t ) + 1 2 rect( t-1 2 ) (b) the average signal power of the signal x ( t ) = 3 cos(2 t + 30) (c) the energy of the signal x ( t ) = e (-1-j 8 ) t u ( t ), where u ( t ) is the unit step function. 1...
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This note was uploaded on 01/15/2012 for the course MAE 143A taught by Professor Miroslavkrstic during the Summer '08 term at UCSD.
- Summer '08