3.
(a) 圖形:一個底面為圓形的角錐,頂點到圓上任一點的距離為a
Find the largest possible volume for right circular cones of
slant height a.
(b) Assume that the oil consuming rate of a car is given by a
function c(v) (with unit 1/hr) :
2
v v
c(v) = 5 ( ------- - -------- + 1 ).Here v is the speed (with
10000 100
unit km/hr).What would be the right speed (that is,the most
economic way) to drive he car?(Caution:the answer is not
v = 50 km/hr)
先這樣吧...還有2題
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