The breakaway point of the root locus on the real axis for a closed loop system with a loop gain
\({\rm{G}}\left( {\rm{s}} \right){\rm{H}}\left( {\rm{s}} \right) = \frac{{{\rm{K}}\left( {{\rm{s}} + 10} \right)}}{{\left( {{\rm{s}} + 2} \right)\left( {{\rm{s}} + 5} \right)}}\) lies1
Between -2 and origin
2
Between -2 and -5
3
between -10 and -∞
4
at -∞