384 Practical MATLAB® Applications for Engineers
fundamental freq. wo = π
0.5−0.50
Amplitude AmplitudeAmplitudeAmplitudeAmplitudeAmplitudetime in sec. time in sec.time in sec.time in sec.time in sec.012 34 012340123 43rd. harmonic, freq. w = 3π
0.20.1−0.10−0.20(^01234)
time in sec.
5th. harmonic, freq. w = 5π
2nd. harmonic, freq. w = 2π
4th. harmonic, freq. w = 4π
6th. harmonic, freq. w = 6π
0.2
−0.2
0
0.1
0.1
−0.1
−0.1
0
0
(^01234)
01234
FIGURE 4.33
Plots of part a of Example 4.2.
Harmonic components of a sawtooth wave
0.4
0.3
0.2
0.1
−0.1
−0.2
−0.3
−0.4
0
Amplitude
0 0.5 1 1.5^2 2.5^3 3.5^4
time (in sec)
FIGURE 4.34
(See color insert following page 374.) Plots of part b of Example 4.2.