logistic模型函数,a*exp(b*x)
经用 nlinfit()函数拟合,得到
a=5.932790870, b=0.01449440215
拟合图形如下
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/fcfaaf51f3deb48fc9dadeccf31f3a292df57874?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
拟合代码见附件
追问logisti模型是
y=k/(1+a*e^rt)这种形式,就是阻滞增长模型,有三个参数,能不能在修改一下O(∩_∩)O谢谢
追答k=0.03721114132, a= -0.9940214811, r=6.065352147e-5
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/94cad1c8a786c917c5db992bca3d70cf3ac757cc?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追问把程序也附上 好吗%>_<%
追答附程序代码
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