名校
1 . 要证明命题“所有实数的平方都是正数”是假命题,只需( )
A.证明所有实数的平方都不是正数 |
B.证明平方是正数的实数有无限多个 |
C.至少找到一个实数,其平方是正数 |
D.至少找到一个实数,其平方不是正数 |
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6卷引用:河南省实验中学2020-2021学年高二下学期期中数学文试题
河南省实验中学2020-2021学年高二下学期期中数学文试题上海市松江区2020-2021学年高一上学期期末数学试题(已下线)1.5全称量词与存在量词-2021-2022学年高一数学同步辅导讲义与检测(人教A版2019必修第一册)上海市上海师范大学附属中学2021-2022学年高一上学期期末数学试题(已下线)专题01集合与逻辑(15个考点)(2)上海市南洋中学2022-2023学年高一上学期期末数学试题
2 . 已知圆
,点P为圆O上的动点,
轴,垂足为D,若
,设点M的轨迹为曲线E.
(1)求曲线E的方程;
(2)直线
与曲线E交于A,B两点,N为曲线E上任意一点,且
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea1cdf62cac33194e615d5640f70f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c0a643b1fb53b95c3df07d1ad1a4fc.png)
(1)求曲线E的方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99114f5ce25a101df5a42d8fd41e5b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd533917a79c00bb3d852625900ae0c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c07b101a1a118c7558a9e59b13c95c.png)
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2021-01-28更新
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3卷引用:河南省三门峡市2020-2021学年高二上学期期末数学(理科)试题
河南省三门峡市2020-2021学年高二上学期期末数学(理科)试题(已下线)大题专练训练23:圆锥曲线(椭圆:定值定点问题3)-2021届高三数学二轮复习山西省太原市2020-2021学年高二上学期期末数学(理)试题
解题方法
3 . 已知函数
,
,
.
(1)若
,曲线
在点
处的切线也是曲线
的切线,证明:
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5016ccf71307904a1e8a6bf8aa87864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b065cf0086996d6b4442eba51c1932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf73322cefafb45657b8018f1e3d05d1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991dbe1f69ea74653803d4590e5724a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2021-02-04更新
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4卷引用:河南省(天一)大联考2020-2021学年高三上学期期末考试理科数学试题
名校
解题方法
4 . 已知椭圆
的左右顶点分别为
,
,离心率为
,且过点
.
(1)求椭圆
的标准方程;
(2)过点
作与
轴不重合的直线
与椭圆
相交于
,
两点(
在
,
之间).证明:直线
与直线
的交点的横坐标是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab95822c58fb9374e7e9965290f4ebd.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af74113f38fffeed8075e57d7f9d2533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c023f4b501684abd869b36d6e6c7f21f.png)
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4卷引用:河南省濮阳市范县第一中学等学校2021-2022学年高二上学期联考检测数学试题
名校
5 . 已知函数
.
(1)讨论
的单调性;
(2)当
时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fa2acfec70c40a7331cd53159876eb.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7c50e5aba6aa3ce7194b59ae81121c.png)
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|
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|
5卷引用:河南省驻马店市2020-2021学年高二上学期期末数学(文)试题
河南省驻马店市2020-2021学年高二上学期期末数学(文)试题江苏省南京师范大学附属中学2020-2021学年高二上学期期末数学试题(已下线)大题专练训练36:导数(构造函数证明不等式1)-2021届高三数学二轮复习福建省莆田第二中学2020—2021学年高二5月月考数学试题(已下线)第五章 导数及其应用(单元重点综合测试)-2023-2024学年高二数学单元速记·巧练(苏教版2019选择性必修第一册)
6 . 已知抛物线
,斜率为1的直线经过抛物线C的焦点,与抛物线C交于A、B两点,且
.
(1)求抛物线C的方程;
(2)若点
在抛物线C上,证明:点P关于直线
的对称点Q也在抛物线C上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ed9d97b8745ed1c15349ea3fffc299.png)
(1)求抛物线C的方程;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42f5bcd4cf5653a0840fc0c0ab8417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c6b1d13fc39f936ef90d9281a6ed57.png)
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2021-01-28更新
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2卷引用:河南省三门峡市2020-2021学年高二上学期期末数学(理科)试题
7 . 已知圆
上有一动点
,点
的坐标为
,四边形
为平行四边形,线段
的垂直平分线交
于点
.
(Ⅰ)求点
的轨迹
的方程;
(Ⅱ)过点
作直线与曲线
交于
两点,点
的坐标为
,直线
与
轴分别交于
两点,求证:线段
的中点为定点,并求出
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88305ca764fd5b2be73bfcd289fb71b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2535ae76ff638079c5344599e4e23d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ecbc50ac24239f0e5d6d2ae182254d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9ce1ab633b923b3b06f5d12dfd51b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(Ⅰ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bb36a6010056e8462b8f830d9d037a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7490886e2807c7b8a4fa57d99c4dc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e8acea56a9f17e6ef9bbce1633497f.png)
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2020-04-16更新
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8卷引用:河南省天一大联考2020-2021学年高三下学期阶段性测试(六)数学(文科)试题
8 . 已知函数
.
(1)求
的单调区间;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d266194b551192e78733572f7af4c21.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72ac1e74d58a6119bd9fd62942118ac.png)
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6卷引用:河南省六市2021届高三第一次联考数学(理科)试题
名校
解题方法
9 . 已知函数
,曲线
在点
处的切线方程为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738274a7d70c4362c8cb633fb74a11b9.png)
.
(1)求
,
的值;
(2)证明函数
存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522bf66c2d68dea65e9c6897cd03406a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738274a7d70c4362c8cb633fb74a11b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c54f82c4d398091bc920bc6224bf4e31.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59237c8c59e7a2209d3f15f5227cddc7.png)
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2020-03-29更新
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7卷引用:河南省驻马店市新蔡县第一高级中学2021-2022学年高三上学期11月月考文科数学试题
名校
10 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501f5be4709af31d301d6a78c37a892b.png)
(1)求函数
的单调区间;
(2)当
时,证明:对任意的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501f5be4709af31d301d6a78c37a892b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f492cb370114b31eecc66868e660b15b.png)
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2020-11-15更新
|
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3卷引用:河南省南阳市2020-2021学年高三上学期期末数学(理)试题