作者gghh711 (lara)
看板trans_math
标题[积分] 91高医
时间Fri Jul 11 21:58:50 2008
1.The area of the region S={(x,y):x≧0,y≦1,x^2+y^2≦4y}is
Ans:2兀 /3 - (√3)/2
2 f(x)
2.If f is a continuous function in[0,2],then ∫--------------=
0 f(x)+f(2-x)
Ans:1
3.The volume of the solids obtained by rotating the region bounded
by the curves y=x , y=x^2 about the line y=2 is?
Ans:8兀 /15
只要给我个公式,或方向,概念就好
可以不用计算过程
请版友为我解惑
谢谢
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