Sec. 4.4
#1a) P(x,y) = -1 + 2(x-1) -4(y-1)
#1b) P(x,y) = -1 - (x-pi/2) - y
Sec. 3.5
#2a)
DF = (y-1 x ) (y x-1)
(0,0) is a stable sink, (1,1) is a saddle.
#2b
DF = (-1+2x 1) (-1 1)
(1,1) and (-1,-1) are saddles.
Last modified: Tue Nov 19 16:44:48 1996