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看板trans_math作者Edward56 (鋒)時間11年前 (2013/01/01 17:52)推噓2(2推 0噓 2→)

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1. A moving company wishes to design an open-top box with a square base whose volume is exactly 32 cubic feet. Please find the dimensions of the box requiring the least amount of materials.[逢甲] 2. Economists estimate that the relationship between the tax rate t on an item and the total sales S of that item(in millions of dollars) is ----- S(t)=9-20 / t for 0<=t<=0.2 Please find the tax rate that maximizes revenue to the government.[課本] -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.168.163.171 ※ 編輯: Edward56 來自: 118.168.163.171 (01/01 18:04)

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beansop

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craig100

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craig100

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