1 . 已知抛物线
,过定点
的动直线
与抛物线
交于
两点,
是坐标平面内的动点,且
的重心为坐标原点
.若
的最小值为1,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf2f0d9868a1a561f6415369cbf5ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f645d4b09fba53f971172cd2602c691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
2021-12-23更新
|
260次组卷
|
2卷引用:山西省运城高中教育发展联盟2022届高三上学期12月阶段性检测理科数学试题
解题方法
2 . 已知抛物线的方程是
,直线l交抛物线于A,B两点,O为坐标原点,若
,则直线AB必过定点___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48f28aeccf369df5980ac787e9e313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef54adb0b01f212dd43fcea5913ce72.png)
您最近一年使用:0次
2021-01-24更新
|
417次组卷
|
4卷引用:山西省运城市景胜中学2021-2022学年高二上学期第二次月考数学(理)试题