解题方法
1 . 如图,在平面直角坐标系
中,过
上的点
作切线
,
分别与直线
,
交于点
,圆
与
轴交于点
.
(1)若
点坐标是
,求直线
的方程;
(2)若
是圆
上的动点,证明:两条动直线
的交点
总在同一个椭圆
上,并求出椭圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a327470311e876d8489eeb8c66435dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf2917e77945b30da7be9b48b0b317a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9454e7762d6924d4a9e5dcf31fb6bc74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf639890f27a42e1383cc6cfa14117a9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/d55806ac-c399-4b9c-b012-1d4e5c5bbf3a.png?resizew=180)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceff0e7d103475c3ba9a2712f373185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7040823265da65a030f0c81f3ae7ddd0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37254351125380127823c0fd7d95458d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7040823265da65a030f0c81f3ae7ddd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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2024-02-23更新
|
91次组卷
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2卷引用:中原名校2022年高三上学期第一次精英联赛文科数学试题
名校
2 . 设
是正整数,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c496b822e4765fc9bb17685f39a4f05.png)
(1)求证:当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb1296f8b1307fd35d219d51f15c242.png)
(2)求证:当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c496b822e4765fc9bb17685f39a4f05.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a79d7f73b6128650bf7aed538260c72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb1296f8b1307fd35d219d51f15c242.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e964999066e7ab9780d6a898bd74d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d093aa4e6b898ff1dab1a5b46519eb3.png)
您最近一年使用:0次
2024-02-11更新
|
109次组卷
|
2卷引用:中原名校2022年高三一轮复习检测联考卷数学(理)试题
解题方法
3 . 离散对数在密码学中有重要的应用.设
是素数,集合
,若
,记
为
除以
的余数,
为
除以
的余数;设
,
两两不同,若
,则称
是以
为底
的离散对数,记为
.
(1)若
,求
;
(2)对
,记
为
除以
的余数(当
能被
整除时,
).证明:
,其中
;
(3)已知
.对
,令
.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05bea470ae14b90937f6f71dc9a6242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b2b0dcbc27df9950b26028e46f6c17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5865fd0fb7c35e8a4a1d311163290b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbe6ebc6c1d1a214f5ca478ae666cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67a1f88ae28ecdb67c7f9c4ae61481b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae890dd5b6300cf23b4905e86410317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff99d1615f90ff71b56ca1dfebd626d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420a12638f77a27c696f63ff946e8684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b0087ea124b6fd98fbbcb9bc4c2e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce071bd0d6fa72ff4ba4e72d810d11f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac54185ed8bb89c774ceb685408156c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7b54c31c5ab3831f260012758ffa12.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099d389a1c0e5877350e62c52c4a724c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ab2ad5d8b72e3f26bef4be0697ec70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6b09b60bf1bf8403c49bc17e365cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ebb2233e8492cf61fe9f9bc68af470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6b09b60bf1bf8403c49bc17e365cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ebb2233e8492cf61fe9f9bc68af470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fc26e532b65641a53eaa7e127aa683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d45dbe0a914249371aed3641515123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ace23b21d7b119ad7ac5cf877c19f0.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce071bd0d6fa72ff4ba4e72d810d11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2793be26b839ae9f8f83cf2b5a597cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a6740a4f2378965bc019bc6aacd44a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f278b4fd6ed264265e3ccfac4ab7ef02.png)
您最近一年使用:0次
2024-01-19更新
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6514次组卷
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8卷引用:2024年九省联考试卷分析及真题鉴赏
2024年九省联考试卷分析及真题鉴赏2024年1月普通高等学校招生全国统一考试适应性测试(九省联考)数学试题(已下线)2024年1月普通高等学校招生全国统一考试适应性测试(九省联考)数学试题变式题16-19(已下线)压轴题高等数学背景下新定义题(九省联考第19题模式)讲(已下线)微考点8-1 新高考新题型19题新定义题型精选(已下线)新题型02 新高考新结构竞赛题型十五大考点汇总-2(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大核心考点)(讲义)(已下线)专题8 考前押题大猜想36-40
名校
4 . 如图1,矩形ABCD,点E,F分别是线段AB,CD的中点,
,将矩形ABCD沿EF翻折.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/f4289d06-b7a3-440e-9930-5d299e03ba32.png?resizew=398)
(1)若所成二面角的大小为
(如图2),求证:直线
面DBF;
(2)若所成二面角的大小为
(如图3),点M在线段AD上,当直线BE与面EMC所成角为
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58022e20e4bd2a6c25f3f3a2d14fb76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/f4289d06-b7a3-440e-9930-5d299e03ba32.png?resizew=398)
(1)若所成二面角的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
(2)若所成二面角的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055617fcb090f104b4d163cf8fd99827.png)
您最近一年使用:0次
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6卷引用:高二理数试题-河南省豫南六校2022-2023学年高二上学期第二次联考试题
高二理数试题-河南省豫南六校2022-2023学年高二上学期第二次联考试题(已下线)回归教材重难点03 空间向量与立体几何-【查漏补缺】2022年高考数学(理)三轮冲刺过关(已下线)数学-2022年高考押题预测卷03(新高考卷)(已下线)新高考卷04黑龙江省哈尔滨市第三中学2022届高三第二次模拟考试理科数学试题湖北省宜昌市夷陵中学2022届高三下学期5月四模数学试题