412
Practical MATLAB
® Applications for Engineers
−10
−8
−6
−4
−2
−2
−1.5
−1
−5
−4
−3
−2
−1
−0.5
0
0.5
0
2
4
6
8
1 0
0
5
10
y(t) versus t
1
1.5
2
0
0.5
1
1.5
0
1
2
3
4
5
1.5
1
0.5
0
Amplitude
Amplitude
Amplitude
x(t) versus t
h(t) versus t
time (in sec)
time (in sec)
time (in sec)
FIGURE 4.58
Plots of x(t), h(t), and y(t) of Example 4.10.
6
4
2
0
−6
−4
−2
0
2
4
6
Symbolic plot of the Fourier Transf. of x(t) versus w
Symbolic plot of the Fourier Transf. of y(t) versus w
frequency (in rad/sec)
−6
−4
−2
0
2
4
6
frequency w (in rad/sec)
Magnitude
Magnitude
5
4
3
2
1
0
FIGURE 4.59
Symbolic plots of X(w) and Y(w) of Example 4.10.
CRC_47760_CH004.indd 412
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7/28/2008 12:26:14 PM
7/28/2008 12:26:14 PM