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数学吧 关注:892,306贴子:8,760,934 IP属地:美国
1楼2013-02-05 11:59回复
没有人么
![](http://static.tieba.baidu.com/tb/editor/images/jd/j_0006.gif)
IP属地:美国
2楼2013-02-05 12:02
来自手机贴吧3楼2013-02-05 12:07
来自手机贴吧4楼2013-02-05 12:08
5楼2013-02-05 12:28![](http://imgsrc.baidu.com/forum/pic/item/b151f8198618367ab2b4ef4a2e738bd4b31ce56c.jpg?v=tbs?v=tbs)
令u=tant t∈[0,π/2]
![](http://imgsrc.baidu.com/forum/w%3D580/sign=a6ccf2daf603918fd7d13dc2613c264b/f985a4c27d1ed21bcb1f8bdfac6eddc450da3fc3.jpg)
6楼2013-02-05 12:49 IP属地:荷兰
7楼2013-02-05 12:53
来自手机贴吧9楼2013-02-05 13:52
![](//tb1.bdstatic.com/tb/cms/PC%E7%AB%AF%E5%BA%95%E9%83%A8%E9%80%9A%E6%A0%8F%E5%BC%B9%E5%B1%821000x120.png)
![](//tb2.bdstatic.com/tb/static-spage/widget/fixed_bar/images/icon_close_1683259.png)