[考古] 96成大

[linda1218 (linda)]

1. show that arctan( x+1 / x-1 )+ arctan(x)=C and find the value C

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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※ 編輯: linda1218       來自: 61.229.132.72        (06/15 02:53)
推 andyfc1:其實不會很難