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http://img132.imageshack.us/img132/5153/njga7.jpg [Broken]

Question 8 is the question I need, but 7 has relevance for it.

I have my equilibrium points, and am stuck on two of them with the same problem.

1 of my points (H,P) = (0,L) - No hunters, but prey.

I put this into my jacobian matrix, and I get two eigenvalues (E)

E1 = Lb-s , E2 = -r

E2 is a negative eigenvalue but what is E1? L, b and s are all stated as positive constants, so how do I know if it is negative or positive?

Without knowing it I can't class the stability of the point, so I can't plot it in the phase plane.

Thanks

Question 8 is the question I need, but 7 has relevance for it.

I have my equilibrium points, and am stuck on two of them with the same problem.

1 of my points (H,P) = (0,L) - No hunters, but prey.

I put this into my jacobian matrix, and I get two eigenvalues (E)

E1 = Lb-s , E2 = -r

E2 is a negative eigenvalue but what is E1? L, b and s are all stated as positive constants, so how do I know if it is negative or positive?

Without knowing it I can't class the stability of the point, so I can't plot it in the phase plane.

Thanks

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