一阶反馈系统的复杂性
(1) FRACTION = 0.06
Units: dmnl/Month
(2) TOTAL BUYERS = 100
Units: person
(3) buy rate = FRACTION*potential buyers
Units: person/Month
(4) Buyers = INTEG(buy rate,1)
Units: person
(5) potential buyers = TOTAL BUYERS-Buyers
Units: person
FINAL TIME: 60
TIME STEP: 0.5
Units: Month
TOTAL BUYERS
potential buyers
FRACTION
buy rate
Buyers
-
+
+
一阶负反馈系统的行
为是单调地趋于目标
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