Appendix A Solutions to the Exercises w 10 H(S) r/[dB] 20 20 log 10-2 = 10 100 9.:)- 5-J 17 -45O 20 -6" 495 10k lk 0.1 - J -84" -jo.1 -20 -90" look 0.01 -40 -90" -J -40 dfS Amplitude sketch: Proceed ad: with real poles arid zeros (Sec 10.4.1) 20 log IHI in dB * I 10 IK 100 Plisse sketch: Proceed as in Sec 10.4.2 "Sg { fI} 0,l 0" -45" -900 §o~~t~ 10.5 on 10 100 1K