railway RRB JE (CBT I + CBT II) Mock Test 2024 Control Systems Stability Analysis Routh-Hurwitz Stability Criteria
Find the locations of any two roots of the characteristic equation F(s) = s4 + 2s3 + 11s2 + 18s + 18 = 0
1
± J9
2
± j3
3
0, 9
4
+j9, -j2