oo -3x
1.∫ e cos(3^(1/2))xdx
o
雖然這題有個公式可以帶 只是cosx帶入 oo 是多少阿 算不出答案
3
2.A rectangular box without a top is to have a given volume 1200cm ,How should
the box be made so as to use the least amount of material?
我算出來答案是 (400/13)^(1/3) 我知道一定不對
2 2 2
(x + 1)(y + 1)(z + 1)
3.x,y,z are positive number find the minimum of ----------------------
xyz
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