I have this assignment (First problem - exercise 2 - dias 7) http://site.iugaza.edu.ps/bhamed/files/2010/02/L4-Root-Locus.ppt Which i am having some problems solving. I am stuck at B) So far i tried to solve the problem, by calculating the distance from origin to the breakaway point, by diff. , and then using Tan(ArcCos(0.707)) * breakaway to get the jw coordinate for the pole. With the σ and jw for the pole, I then solve K2 for the charactic equation. where i get the value K2 = 6.23475*10^6 calc: showing ch. eq => Redbox indicate S, and bluebox indicate jw value http://snag.gy/Fkz26.jpg Jw calculation: http://snag.gy/oZ4u9.jpg But according to solution manual it should be 81000.. I don't see where i am going wrong.