306X Homework, Fall 2002

306X Homework #9 due beginning of class, Tuesday, November 12th, 2002.

Problems are from Blanchard, Devaney, and Hall, 2nd ed., unless otherwise noted.

[5.1]
	6. (Linearization of competing species model at the 3 equilibria
            we didn't do in class Mon 10/22.)
            You may, if you wish, use Maple to compute the eigenstuff:
            with(linalg):
            A:=[[1,2],
                [3,4]];
            eigenvals(A);
            eigenvects(A);

[5.2]   (We've done this section earlier.)

[5.3]	X. Show that the function H given in the answer to 
	   Problem 5.3.15 is in fact a conserved quantity
           along the solutions of the (first) system given
           in that problem.