作者qqoodb (1234)
看板trans_math
标题[积分] about converting to polar coordinates
时间Wed Jul 13 01:11:47 2005
4 (4y-y^2)^(1/2)
∫∫ x^2 dxdy
0 0
麻烦各位了
谢谢
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 61.217.101.47
1F：推 TBEX:是转成这样吧 0<= R <=4sinθ 0<= θ <=π/2218.184.164.225 07/13
2F：推 qqoodb:请问你怎麽转的啊?? 谢啦 59.115.72.39 07/13
3F：推 TBEX:0<= y <=4 0<= x <= (4y-y^2)^(0.5) 画出来看吧218.184.164.225 07/13
4F：推 qqoodb:我懂了 谢谢你~~~ 59.115.72.44 07/14