均衡点	det(W)	tr(W)
A(0,1)	$C_{2} (m P - C_{1})$	$(m P - C_{1}) + C_{2}$
B(0,0)	$C_{1} C_{2}$	$- (C_{1} + C_{2})$
C(1,0)	$C_{1} ((1 - m) P - C_{2})$	$C_{1} + ((1 - m) P - C_{2})$
D(1,1)	$(C_{1} - m P) (C_{2} - (1 - m) P)$	$(C_{1} - m P) + (C_{2} - (1 - m) P)$
$E (C_{2} / (1 - m) P, C_{1} / m P)$	$[C_{2} / (1 - m) P (C_{2} / (1 - m) P - 1) m P] [C_{1} / a P (C_{1} / a P - 1) (1 - a) P]$