User`s guide

norm
11-154
Compute its infinity norm by typing
[ninf,fpeak] = norm(H,inf)
ninf =
2.5488
fpeak =
3.0844
These values are confirmed by the Bode plot of .
bode(H)
The gain indeed peaks at approximately 3 rad/sec and its peak value in dB is
found by typing
20*log10(ninf)
Hz
()
Frequency (rad/sec)
Phase (deg); Magnitude (dB)
Bode Diagrams
−5
0
5
10
10
−1
10
0
10
1
10
2
−400
−300
−200
−100
0
100
200