EE-410
Solved Problems
HW-2
1. Determine the average power and energy of the following continuous-time signals:
(a) x(t) = ej(2t+ 4 )
The signal is perodic thus its average energy is infinite.
The average power of the signal is:
Z T
2
1
|x(t)|2 dt
P = lim

EE-410
Solution HW#2
(v)
Since x5[k ] is a finite duration signal of length 16 with finite magnitude, it must be an energy
signal.
The total energy in x5[k ] is given by
10
Ex5 =
2
15
11
4 1
( 2 ) + 1 = 4 1 + 5 = 1398106
k =0
k
k =11
The average power Px

EE-410
Solved Problems
HW-1
1. Determine whether or not each of the following continuous-time signals is periodic. If the
signal is periodic, determine its fundamental period.
(a) x(t) = 3 cos(4t + 3 )
Continuous sinusoids are always periodic. The period