Root Locus : Revision some points asked by students_3: break away/in point

Steps to determine the break away point:

1. Find the Characteristics Equation 1+G(s)H(s)=0 of the system.
2. Write  K in terms of  s.
3. Derive dK/ds  and Put dK/ds =0.
4. The roots of the equation dK/ds =0 are the break away points.
5. Note: If the value of K is positive for any roots of dK/ds=0, the roots   (are) valid break away /break in points.

In this example the value of K is positive  for S=-0.785. Hence this the break away point.In the video there is error in the last minutes. so correct by this.

Remaining points are ok.

Take Care

Jitender