作者hothero (hothero)
看板trans_math
标题Re: [积分] 两题求旋转体体积
时间Sat Jan 10 12:10:45 2009
※ 引述《hothero (hothero)》之铭言:
: 1.The base of a solid is the region inside the circle x^2+y^2=4.Find the
: volume of the solid if every cross section by a plane perpendicular to the
: x-axis is a square.
: 2.x=√y + 1,y=4,x=0,y=0;about the x-axis
: ↑画出来的范围令我不知该如何下手>"<
请问可以帮我打算式吗,或是稍微点我一下>"<PLEASE...
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