1 . 设
是满足条件
,
的所有
组成的集合,若
,
的平分线
把对边
分成两部分的比
:
,就规定
与实数
对应,则所有这些实数
构成的集合是________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a4d634d3d678a1912a827fade6a0d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae5760e477516c61a30946bb9b11e38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88c8887a27f65b7e0878fcc24707e95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2 . 如图,
的面积为1,过
内一点O分别引三条边的平行线DE、FG、HI,点D、E、F、G、H、I均在
的边上.求六边形DGHEFI面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2018/12/4/2089525482176512/2091143550705664/STEM/1b5136f608b04fb9b0be1820aad5e743.png?resizew=176)
您最近一年使用:0次
名校
3 . 在直角坐标平面xOy上,⊙O:
,⊙O1:
.过x轴的左半轴上一点M作⊙O的切线,与⊙O切于点A,与⊙O1分别交于点B、C.若AB = BC,则点M的坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f46bd6985253f993dc2d1c12b801dc2.png)
您最近一年使用:0次
2018-12-06更新
|
136次组卷
|
3卷引用:2015年上海市高中数学竞赛试题
2015年上海市高中数学竞赛试题2019届江苏省泰州中学高三下学期5月第四次模拟考试数学试题(已下线)第2章 圆与方程(培优卷)-2021-2022学年高二数学新教材单元双测卷(苏教版2019选择性必修第一册)