阻滞增长模型(Logistic模型)dx rx dtdx/dt
dx x r ( x) x rx(1 ) dt xmx xm xm/2 x0
0
xm/2
xm x
0
t
x (t )
xm xm rt 1 ( 1)e x0
x(t)~S形曲线, x增加先快后慢
阻滞增长模型(Logistic模型)dx rx dtdx/dt
dx x r ( x) x rx(1 ) dt xmx xm xm/2 x0
0
xm/2
xm x
0
t
x (t )
xm xm rt 1 ( 1)e x0
x(t)~S形曲线, x增加先快后慢