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I'm trying to check whether the system represented by h=tf([1, 1],[1 6 0 0]) is stable by the nyquist criterion.

but when i put the commend 'nyquist(h)' at the matlab, i get only this graph

clearly it's not the full sketch. how can i change it could see whole of it? using the button at the top won't work.

Zooly92
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  • This nyquist plot is unbounded, it tends to infinity when the frequency tends to 0. – AVK Jun 25 '17 at 10:45
  • I know that, but I'm sure that yet there is a way to see whole of it (otherwise it wasn't possible to print those sektches at books etc.) – Zooly92 Jun 26 '17 at 11:40

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