The colume V(in cubic feet)数学题
The colume V(in cubic feet) of water in a small reservior during spring runoff is given by the function V(t)=5000(t+1)^2 for t in months and 0
人气：325 ℃ 时间：2020-07-21 18:57:09
解答
the flow rate (abbr.as R) equals to dV/dt,so
R(t)=dV/dt=10000(t+1)
R(0)=10000 (ft³/m)
R(2)=30000 (ft³/m)
V(t)=5000(t+1)^2=11250
so,t=1.5 (month)
R(1.5)=25000 (ft³/m)额，下面一个方程是不是算错了，想给你，能改改吗。sorryt=0.5R(0.5)=15000 (ft³/m)
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