名校
解题方法
1 . 在平面直角坐标系中,过直线
上任一点
作该直线的垂线
,
,线段
的中垂线与直线
交于点
.
(1)当
在直线
上运动时,求点
的轨迹
的方程;
(2)过
向圆
引两条切线,与轨迹
的另一个交点分别为
,
.
(i)证明:直线
与圆
也相切;
(ii)求
周长的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236a066876764d090523afe0ea734a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50154acc6ad77c6c777fffe3a08afb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f817fa2d2a8c4e38191900ed7730c879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(i)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
2 . 已知点
,
,动点
满足
,设动点
的轨迹为曲线
,过曲线
与
轴的负半轴的交点
作两条直线分别交曲线
于点
(异于
),且直线
,
的斜率之积为
.
(1)求曲线
的方程;
(2)证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2699389a501885734a411784cdccf844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7422cbdb4ad06d155abb2ccdb25ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c34edab5c9cdba0b97f74597b5ca85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30d314a642667fef559032264647366.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-11-11更新
|
628次组卷
|
2卷引用:重庆市北碚区缙云教育联盟2024届高考零诊数学试题
名校
解题方法
3 . 设抛物线
与两坐标轴的交点分别记为M,N,G,曲线C是经过这三点的圆.
(1)求圆C的方程.
(2)过
作直线l与圆C相交于A,B两点,
(i)用坐标法证明:
是定值.
(ii)设
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e6893063df9d4188f3b7002664097d.png)
(1)求圆C的方程.
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cc0f9aa168e43cc5759f017d69b498.png)
(i)用坐标法证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559d66fd8b309fd440ce9bda78a579c9.png)
(ii)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be14af6ba191f83c422bd408900882b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2397b6e8a1a21509f164d7b4b3382821.png)
您最近一年使用:0次
2023-10-08更新
|
569次组卷
|
3卷引用:重庆市乌江新高考协作体2023-2024学年高二上学期期中学业质量联合调研抽测数学试题
名校
解题方法
4 . 正锥体具有良好的对称性.
(1)在正三棱锥
中,证明:
;
(2)已知正棱锥
.请在下列两个条件中,选择一个命题填到___________上,并证明:
①当
,
时,存在
,使得
;
②当
,
时,不存在
,使得
.
注:如果选择多个条件分别解答,按第一个解答计分.
(1)在正三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
(2)已知正棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a751517ae8956a455e181aeb7558e4d0.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef30a12b66b3faaa4804c8a7e573543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deffbcb0165f1a90a435d50118a14b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5e1fb8d700e02034369a0c96800688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34c4641a29675158925670f8096479a.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf26f196ea6e8190cb6f94feb4e6c35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deffbcb0165f1a90a435d50118a14b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5e1fb8d700e02034369a0c96800688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34c4641a29675158925670f8096479a.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
5 . 在边长为6的等边
(如图甲)中,已知点A,B分别为
的中点,现将
沿直线
翻折,使点P在底面
的射影刚好为对角线
与
的交点H,连接
得到四棱锥
(如图乙).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/d1d61b73-922f-4ce1-a0a9-2a235ba8deae.png?resizew=290)
(1)求证:平面
平面
.
(2)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb46aaae98bce8e66848e09c2c1cdbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e7344dca1e40bf072371ddd5640111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/d1d61b73-922f-4ce1-a0a9-2a235ba8deae.png?resizew=290)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
名校
6 . 如图,边长是6的等边三角形
和矩形
.现以
为轴将面
进行旋转,使之形成四棱锥
,
是等边三角形
的中心,
,
分别是
,
的中点,且
,
面
,交
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/3197f79c-594b-42ed-a13b-b61964f1bf7d.png?resizew=233)
(1)求证
面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
(2)求
和面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db2b1c641b93caae9b7a82441e4ba70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6719c1d339ec50a9bf36b26af7258b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a78b6fb582468bdd5c3afa5461aefce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/3197f79c-594b-42ed-a13b-b61964f1bf7d.png?resizew=233)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1ed33ef4004d6a7d2eeb6ccd113479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e74395b07e8153a0ef0bbcb5881013f.png)
您最近一年使用:0次
2023-01-14更新
|
2427次组卷
|
7卷引用:重庆市2023届高三下学期3月月度质量检测数学试题
重庆市2023届高三下学期3月月度质量检测数学试题辽宁省葫芦岛市第一高级中学2022-2023学年高三上学期期末数学试题第8章 立体几何初步 章末测试(基础)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)专题8.16 空间角大题专项训练(30道)-2022-2023学年高一数学举一反三系列(人教A版2019必修第二册)(已下线)13.2.3 直线和平面的位置关系(1)(已下线)第04讲 利用几何法解决空间角和距离19种常见考法归类(2)(已下线)模块五 期末重组篇 专题7
名校
解题方法
7 . 如图,圆柱
的轴截面ABCD为正方形,
,EF是圆柱上异于AD,BC的母线,P,Q分别为线段BF,ED上的点.
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964375380615168/2965847181041664/STEM/3e77eb85-a8cb-4d19-a8b9-ba53f2b5fdb7.png?resizew=186)
(1)若P,Q分别为BF,ED的中点,证明:
平面CDF;
(2)若
,求图中所示多面体FDQPC的体积V的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/2022/4/23/2964375380615168/2965847181041664/STEM/3e77eb85-a8cb-4d19-a8b9-ba53f2b5fdb7.png?resizew=186)
(1)若P,Q分别为BF,ED的中点,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72221ee5b504d596ff799c0b356aa0ea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4996f88b6be9b1df67f43771eda6d36f.png)
您最近一年使用:0次
2022-04-25更新
|
1616次组卷
|
5卷引用:重庆市南开中学校2021-2022学年高一下学期期中数学试题
重庆市南开中学校2021-2022学年高一下学期期中数学试题重庆市南岸南坪中学校2022-2023学年高一下学期期中数学试题(已下线)第02讲 玩转立体几何中的角度、体积、距离问题-2022年暑假高一升高二数学衔接知识自学讲义(人教A版2019)辽宁省大连市第八中学2021-2022学年高一下学期6月月考数学试题吉林省延边朝鲜族自治州延吉市延边第二中学2022-2023学年高一下学期期中数学试题
名校
解题方法
8 . 圆柱
如图所示,
为下底面圆的直径,
为上底面圆的直径,
底面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/25/2986891897692160/2987724381298688/STEM/5a8b1c56-2246-4566-89d0-40b77e3baf1d.png?resizew=155)
(1)证明:
面
.
(2)求圆柱
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d212c1709b8e72a055cf1b5381ef64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2986891897692160/2987724381298688/STEM/5a8b1c56-2246-4566-89d0-40b77e3baf1d.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574a6cff0aca240f071ed933c28e32f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
(2)求圆柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
您最近一年使用:0次
2022-05-26更新
|
873次组卷
|
5卷引用:重庆市实验中学校2021-2022学年高一下学期期末复习(三)数学试题
重庆市实验中学校2021-2022学年高一下学期期末复习(三)数学试题河北省沧衡八校联盟2021-2022学年高一下学期期中数学试题广东省揭阳市普宁市2021-2022学年高一下学期期末数学试题(已下线)8.6.1 空间直线、平面的垂直(精练)-2022-2023学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)期末复习06 空间几何线面、面面平行-期末专项复习
9 . 在平面直角坐标系中,已知圆
,直线
.
(1)求证:直线
与圆
总有两个不同的交点;
(2)在①
,②
最小,③过A,B两点分别作圆
的切线,切线交于点
,这三个条件中任选一个,补充在下面问题中并求解;
设圆
的圆心为
,直线
与圆
交于A,B两点,当__________时,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321933346d4fed890863be4cb25edb63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ae92459c4682762669063b425ba963.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e5aceeb2d9c0fa9e7ff8d1df4b86b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2743c965e63b856f45c9e581fcf719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bd4e5049fa304e4d352bfe6dee455d.png)
设圆
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2021-11-05更新
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677次组卷
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5卷引用:重庆市西南大学附属中学2021-2022学年高二上学期期中数学试题
10 . 如图所示,图(1)中的
中,
,
,
是
的中点,现将
沿
折起,使点
到达点
的位置,且满足
,得到如图(2)所示的三棱锥
,点
、
分别是棱
、
的中点,
、
分别在棱
、
上,满足
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943275079565312/2945845829574656/STEM/6ecebc91-3eef-4c0b-8fce-ab3ef3ab4ae3.png?resizew=293)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aedf65d7d930fdb972d4802c0dea8b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c971d210a955c4c4be75c38f34a68fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2034ad1ac2d047eba16071d9d470cbfa.png)
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943275079565312/2945845829574656/STEM/6ecebc91-3eef-4c0b-8fce-ab3ef3ab4ae3.png?resizew=293)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbae23711fb470b75778130c91e0e15.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
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