1:1  ☆简单快讯：http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=664912&
http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=376  [每周一题] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665774&
http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=378 [每周一星] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665768&
[每周一题] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665776&
http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=380 [每周一星] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665770&
[每周一题] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665778&
http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=382 [每周一题] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665780&
http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=384
[每周一题] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665782&
http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=386
[每周一题] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=665784&
http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=368
|
|
|
![20天大作战[2015]](https://bbs.jd100.com/attachment/medal/cec543c13f7ea1b.jpg "20天大作战[2015]"){kind=small}
![20天大作战[2014]](https://bbs.jd100.com/attachment/medal/465e7ccd53045d5.png "20天大作战[2014]"){kind=small}
![28天勇士[春]](https://bbs.jd100.com/attachment/medal/13d5b846139de25.png "28天勇士[春]"){kind=small}
![21天勇士[春]](https://bbs.jd100.com/attachment/medal/557cbed59379b9b.png "21天勇士[春]"){kind=small}
![14天勇士[春]](https://bbs.jd100.com/attachment/medal/0a2a8be87813938.png "14天勇士[春]"){kind=small}
![7天勇士[春]](https://bbs.jd100.com/attachment/medal/7b734d35544b9d3.png "7天勇士[春]"){kind=small}
![28天勇士[寒假]](https://bbs.jd100.com/attachment/medal/f7cb21a2bdf0790.jpg "28天勇士[寒假]"){kind=small}
![21天勇士[寒]](https://bbs.jd100.com/attachment/medal/cda474e823b15b8.jpg "21天勇士[寒]"){kind=small}
![14天勇士[寒]](https://bbs.jd100.com/attachment/medal/9aacf8cc0ea8134.jpg "14天勇士[寒]"){kind=small}
![7天勇士[寒]](https://bbs.jd100.com/attachment/medal/3ae915c994fd934.jpg "7天勇士[寒]"){kind=small}
![勇不止步[春]](https://bbs.jd100.com/attachment/medal/f783eb36b20a4e2.jpg "勇不止步[春]"){kind=small}
![勇不止步[夏]](https://bbs.jd100.com/attachment/medal/d81a441ef64b068.jpg "勇不止步[夏]"){kind=small}
![7天勇士[暑]](https://bbs.jd100.com/attachment/medal/8ad8dbd20210831.jpg "7天勇士[暑]"){kind=small}
![14天勇士[暑]](https://bbs.jd100.com/attachment/medal/ccbd3226d78250f.jpg "14天勇士[暑]"){kind=small}
![21天勇士[暑]](https://bbs.jd100.com/attachment/medal/63814ff34bb2a24.jpg "21天勇士[暑]"){kind=small}
![28天勇士[暑]](https://bbs.jd100.com/attachment/medal/e87f38d2f0151f0.jpg "28天勇士[暑]"){kind=small}
![35天勇士[暑]](https://bbs.jd100.com/attachment/medal/bdf9a316a9af31b.jpg "35天勇士[暑]"){kind=small}
![42天勇士[暑]](https://bbs.jd100.com/attachment/medal/a0f25f6f396ba8a.jpg "42天勇士[暑]"){kind=small}
![49天勇士[暑]](https://bbs.jd100.com/attachment/medal/611dbeb8ac74943.jpg "49天勇士[暑]"){kind=small}
|
沙发#
发布于：2013-04-07 19:59
只算出了第一问：平两边同时方整理得 2倍根号下（1+x1）(1+x2）大于等于2倍根号下1—(x1+x2）
因为x1+x2小于等于1且1—x1>0,1—x2>0故左边一定大于0，右边大于或等于0，所以( 此处滤去几个字 ）。 |
|
|
板凳#
发布于：2013-04-07 22:47
000000000000000000000000000000000000000000000000
|
|
|
