作者linda1218 (linda)
看板trans_math
标题[考古] 92台大A
时间Mon Apr 14 02:24:29 2008
4.
evaluate the integral
SS (exp(xy-x^2-y^2))dA, R=x^2+y^2-xy <=5
R
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 220.139.221.114
1F：推 pobm:要考数学系? ^^加油 140.114.212.38 04/14 15:33
2F：推 pobm:会用Jocobian吗? 把-(x^2)-(y^2)+xy先对x配方 140.114.212.38 04/14 15:42
3F：→ pobm:你题目打错了~是xy不是x6 140.114.212.38 04/14 15:44
4F：→ pobm:然後令x-(1/2)y=u [3^(1/2)]y/2=v即可解 140.114.212.38 04/14 15:45
5F：→ pobm:希望一起当同学罗~ 140.114.212.38 04/14 15:46
可以写看看吗~?
※ 编辑: linda1218 来自: 140.122.75.27 (04/15 19:53)
6F：推 pobm:你也是师大的耶^^ 140.114.212.38 04/16 18:46