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...capacity, you can take k to be an estimate of the initial relative growth rate.) use the logistic model to estimate the world population in the year 2000 & compare with the actual population of...

(1 + ae^bt)y = k, where a = 71.57, b = - 0.0516 and k = 895598 By Product Rule, (1 + ae^bt)(dy/dt)+ y(abe^bt) = 0 dy/dt = - y(abe^bt)/(1 + ae^bt) = - kabe^bt/(1 + ae^bt)^2 Now t = 30 so rate of change = y' = - (895598)(71.57)(- 0.0516)e^(- 0.0516 x 30)/[1 + 71.57e^(-0.0516 x 30)]^2 = 703405.83/263.12 = 2673.3. So...

http://i1090.photobucket.com/albums/i376/Nelson_Yu/int-2020.jpg 圖片參考：http://i1090.photobucket.com/albums/i376/Nelson_Yu/int-2020.jpg

...wikipedia.org/wiki/ Logistics A supply chain, logistics network, or supply network is a coordinated.... There are a variety of supply chain models , which address both the upstream and downstream sides...