在棱长为2的正方体
中,点
是正方体棱上一点,
.
①若
,则满足条件的点
的个数为______ ;
②若满足
的点
的个数为6,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f7aa9a95bb1dc23472b8132472670c.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4338dd5d6ac02dbb9d5069eb98f436d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②若满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f7aa9a95bb1dc23472b8132472670c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
19-20高二上·广东佛山·期末 查看更多[3]
广东省佛山市2019-2020学年高二上学期期末数学试题(已下线)必刷卷08-2020年高考数学必刷试卷(新高考)【学科网名师堂】-《2020年新高考政策解读与配套资源》(已下线)卷08-2020年高考数学冲刺逆袭必备卷(山东、海南专用)【学科网名师堂】
更新时间:2020-01-30 19:51:15
|
【知识点】 椭圆定义及辨析
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