作者vexchy (乐观&神秘)
看板Math
标题[微积] 旋转体表面积
时间Mon Jul 18 13:40:02 2011
2 lnx
y = 2x - ----- + 19 1≦x ≦e
16
对y轴旋转...
怎麽改成x = f(y).. 还是说我方向错了><"? 求救求救
Find the area of the surface obtained by rotating the curve , about
(a) the x-axis
(b) the y-axis
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1F：推 ntust661 :确定是表面鸡?@@ 07/18 14:03
2F：→ vexchy :我po英文题目上来 07/18 14:06
※ 编辑: vexchy 来自: 111.240.130.19 (07/18 14:07)