作者youyouyou (这就是人生阿)
看板trans_math
标题Re: [考古] 96成大
时间Sun Jun 15 11:28:46 2008
※ 引述《linda1218 (linda)》之铭言:
: 1. show that arctan( x+1 / x-1 )+ arctan(x)=C and find the value C
1请问会微分吗?
2请问把 x=0带入之後 arctan (-1) 以及 arctan(0) 您知道是甚麽数字吗?
: 2. find the surface area of the portions of the sphere x^2 +y^2 +z^2=4
: that are within the cyclinder (x-1)^2 + y^2 =1
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◆ From: 140.112.4.234
※ 编辑: youyouyou 来自: 140.112.4.234 (06/15 11:29)