名校
解题方法
1 . 希腊著名数学家阿波罗尼斯与欧几里得、阿基米德齐名.他发现:“平面内到两个定点A,B的距离之比为定值
的点的轨迹是圆”.后来,人们将这个圆以他的名字命名,称为阿波罗尼斯圆,简称阿氏圆.已知在平面直角坐标系
中,
,点
是满足
的阿氏圆上的任一点,若抛物线
的焦点为
,过点
的直线与此阿氏圆相交所得的最长弦与最短弦的和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08f5d6f91366da27e9b96452bb04977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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2023-05-22更新
|
616次组卷
|
5卷引用:河北省正定中学2023届高三模拟预测(二)数学试题
河北省正定中学2023届高三模拟预测(二)数学试题河北省衡水市部分重点高中2023届高三二模数学试题(已下线)第05讲 3.3.1抛物线及其标准方程(8类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)(已下线)专题1 超级名圆 性质优先 练(已下线)专题3 阿波罗尼斯圆及其应用【练】(压轴小题大全)
解题方法
2 . 在棱长为
的正方体
中,
均为侧面
内的动点,且满足
,点
在线段
上,点
到点
的距离与到平面
的距离相等,下列命题:
①直线
与
所成的角为定值;
②
平面
;
③点
的轨迹是一条线段;
④
的最小值为
.
其中正确的是__________ (请把所有正确命题的序号填在横线上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9369aed2d8309af46ac3eaffb9cce537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3432d20e661779ddcefda76afcc2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250833a6c405ffd724b673b478c22919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
其中正确的是
您最近一年使用:0次
解题方法
3 . 如图,已知四面体
,
和
是边长为2的正三角形,
,
是该四面体表面及其内部的动点.若
,
,则点
轨迹的长度为______ ;若
在
内(含边界)且
,则点
轨迹的长度为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/cdaf4622-4033-4371-acee-eac803a1bfba.png?resizew=157)
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2022-11-23更新
|
439次组卷
|
2卷引用:河北省部分学校2023-2024学年高三上学期五调考试数学试题
4 . 如图所示,
是平面
内一定点,
是平面
外一定点,直线
与平面
所成角为45°.设平面
内的动点
到
点、
点距离分别为
、
,且
.若点
的轨迹是一条直线,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
___________ ;若点
的轨迹是圆,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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名校
5 . 已知正方体
棱长为2,点
是上底面
内一动点,若三棱锥
的外接球表面积恰为
,则此时点
构成的图形面积为________ .
![](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/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2019-05-14更新
|
1219次组卷
|
5卷引用:河北省衡水市衡水中学2019届高三下学期六调考试(文)数学试题
河北省衡水市衡水中学2019届高三下学期六调考试(文)数学试题(已下线)【全国百强校】河北省衡水中学2019届高三下学期六调考试数学(文)试题2020届四川省眉山市高三下学期第二次诊断性考试数学(理)试题江西省南昌市第二中学2021届高三上学期第三次考试数学(文)试题四川省兴文第二中学校2023-2024学年高三上学期2月期末理科数学试题
6 . 如图,将平面直角坐标系中的纵轴绕原点
顺时针旋转
后,构成一个斜坐标平面
.在此斜坐标平面
中,点
的坐标定义如下:过点
作两坐标轴的平分线,分别交两轴于
两点,则
在
轴上表示的数为
,
在
轴上表示的数为
.那么以原点
为圆心的单位圆在此斜坐标系下的方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
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2016-12-04更新
|
550次组卷
|
5卷引用:2016届河北省衡水中学高三下学期一模考试理科数学试卷
2011·河北唐山·一模
7 . 已知实数
.
满足方程
,当
(
)时,由此方程可以确定一个偶函数
,则抛物线
的焦点
到点
的轨迹上点的距离最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2433dee271e830a1da8e8e4789c9eb3.png)
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