What is the number of right half plane poles in closed-loop transfer function:
\(\frac{{{\rm{C}}\left( {\rm{s}} \right)}}{{{\rm{R}}\left( {\rm{s}} \right)}} = \frac{50}{{{{{5s^5}+{35s^4+30s^3+210s^2+40s+280}}}}}\)
1
3
2
2
3
0
4
1
5
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