In Figure E.56 match each system pole-zero diagram to its step response and frequency response.

In Figure E.57 match the pole-zero diagrams to the corresponding magnitude frequency responses by filling in each blank with the correct letter.

2 A B -1 0 1 1s hin 0 S IHI 2 [u]! 0 1 2s 10 20 30 0 10 20 20 If 2f 2 5 IHI 2 hinh 0 3s 1 []' 30 0 10 20 30 3f 2 5 IHI 80 2 2 D 5 IHI 0 1 4s 10 20 4f 20 30 2