-
The first two rows of Routh’s tabulation of a fourth-order system are
s4 1 10 5
s3 2 20
The number of roots of the system lying on the right half of s-plane is—
-
- 0
- 2
- 3
- 4
- 0
Correct Option: B
where ε is very large number approaching infinity, we see that in the first column of the table, there are two sign changes. Therefore, the number of roots of the changed equation of the system lying in the right half of s-plane is 2.
Hence alternative (B) is the correct choice.
