名校
1 . 已知抛物线
的焦点为
,斜率为
的直线过
且与抛物线交于
两点,
为坐标原点,若
在第一象限,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd20adb927eccd5e34c865a1513c16b.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd20adb927eccd5e34c865a1513c16b.png)
您最近一年使用:0次
2020-02-09更新
|
461次组卷
|
3卷引用:2020届内蒙古鄂尔多斯市第一中学高三下学期第一次模拟考试数学(理)试题
2 . 下列命题中
①已知点
,动点
满足
,则点
的轨迹是一个圆;
②已知
,则动点
的轨迹是双曲线右边一支;
③两个随机变量的线性相关性越强,则相关系数的绝对值就越接近于
;
④在平面直角坐标系内,到点
和直线
的距离相等的点的轨迹是抛物线;
⑤设定点
,动点
满足条件
,则点
的轨迹是椭圆.
正确的命题是__________ .
①已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2ba05abdc8179e5ff980fb2d15ce2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71dfa562fe8529f0f92673c2864d3c5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e60f7f44e7986a067b75c53faa438f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
③两个随机变量的线性相关性越强,则相关系数的绝对值就越接近于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
④在平面直角坐标系内,到点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff16f02559e1312c183861c5526e560.png)
⑤设定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8946b9552dc83bced9cfc7d8909f8d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fde9ba55ec6f59344a2a68f9b32f7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
正确的命题是
您最近一年使用:0次
2017-12-05更新
|
971次组卷
|
2卷引用:内蒙古鄂尔多斯市第一中学2018-2019学年高二下学期期末数学(理)试题