The population,P(t),of China,† in billions,c

发布时间：2021-02-24 00:42:57

The population,P(t),of China,† in billions,can be approximated byP(t) = 1.267(1.007)t,where t is the number of years since the start of 2000.According to this model,how fast was the population g

网友回答

写出来就可以了,举个例子如h=0.1,2008年增速为：P(8.1)-P(8.0)/0.1=[1.267*1.007^(8.1)-1.267*1.007^(8.0)]/0.1=1.267*1.007^(8.0)*{(1.007^0.1-1)/0.1},你用计算器按一下,去试试看
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