名校
1 . 设函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)设
,若对任意的
,存在
使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab5e14a2801eefae0c370c75f43ddbe.png)
(1)当
![](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/df9b4ac1458224ff0cd58a9118a725c4.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859b3306376addcc89aaf8dbe5656181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21557bcdbe6ff39b4d1bec5787cc220b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43783a2ad8d15f3753d28b72f71bd442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf80f9cf72a90e6a974a9b634f06887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-05-04更新
|
837次组卷
|
9卷引用:北京市东城区2017届高三二模理科数学试题
北京市东城区2017届高三二模理科数学试题北京市东城区2017届高三5月综合练习(二模)数学理试题北京市东城区2017届高三5月综合练习(二模)理数试题(已下线)2018年6月1日 押高考数学第21题——《每日一题》2018年高三文科数学四轮复习 (已下线)2018年6月1日 押高考数学第21题——《每日一题》2018年高三理科数学四轮复习 (已下线)2019年5月31日 《每日一题》(文数)四轮复习—— 押高考数学第21题(已下线)2019年5月31日 《每日一题》(理数)四轮复习—— 押高考数学第21题北京市西城区北京师范大学附属实验中学2019-2020学年高三上学期12月月考数学试题(已下线)卷02-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(北京专用)
解题方法
2 . 已知函数
,
① 若
有且只有一个根,则实数
的取值范围是_______ .
② 若关于
的方程
有且仅有
个不同的实根,则实数
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8d10092f1941c4eb20d34df1c48f62.png)
① 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
② 若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ab34fd2ab1cf258c0cf8ac755003e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
名校
3 . 对于
维向量
,若对任意
均有
或
,则称
为
维
向量. 对于两个
维
向量
定义
.
(1)若
, 求
的值;
(2)现有一个
维
向量序列:
若
且满足:
,求证:该序列中不存在
维
向量
.
(3) 现有一个
维
向量序列:
若
且满足:
,若存在正整数
使得
为
维
向量序列中的项,求出所有的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d5161d0f48af5d683e6437e7263a19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475426b747f4fb1632ab89616983f44c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca64ef9e0c3dd14e99d113dbbe973ace.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4988a9309359e790f4750d640a615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c267471981116d4f1efafbdb5d8a307a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5881e8018da8862a8d6ce6d8ad0961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
(2)现有一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e81fd1ebe96bd830c057f5f9c2c871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069e0779f6f4c055d2b1ae8819856aea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164e87e68a2189679fd71b910611abf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deea0d65e8bba231c24029c419d8623e.png)
(3) 现有一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e81fd1ebe96bd830c057f5f9c2c871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea0a314158f7ddb302b29c03a7b4446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fb7a0db2d0ed0c3b60c989ec52da1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4d9051450515a74d33bbb0aa92be19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-05-04更新
|
607次组卷
|
5卷引用:北京市东城区2017届高三二模理科数学试题
北京市东城区2017届高三二模理科数学试题北京市东城区2017届高三5月综合练习(二模)数学理试题北京市东城区2017届高三5月综合练习(二模)理数试题(已下线)卷02-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(北京专用)(已下线)北京市第四中学2023~2024学年高二上学期期中考试数学试题
4 . 已知椭圆
:
的左、右顶点分别为
,
,且
,离心率为
.
(Ⅰ)求椭圆
的方程;
(Ⅱ)设点
,若点
在直线
上,直线
与椭圆交于另一点
.判断是否存在点
,使得四边形
为梯形?若存在,求出点
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/179d7920ec6cd22f3a0cfa6738260153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d419a3c588616c8e9765cd4bbb6190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d54e9dc7ec1108db228cf6f705a0f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2017-04-18更新
|
910次组卷
|
3卷引用:2020届北京市东城区高三一模线上统练数学(二)试题
名校
5 . 已知函数
,点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9786abfbeefde2c93403b85dca2a6fa.png)
都在曲线
上,且线段
与曲线
有五个公共点,则
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e92ba55a985cf3de7d22e5489346e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2de78b3148620cc740e52edb9a791c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9786abfbeefde2c93403b85dca2a6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e01f1b16d9449bd3756c1be78aee5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
A.4 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
2017-04-06更新
|
981次组卷
|
5卷引用:2017届北京市丰台区高三第二学期一模练习数学文科试卷
6 . 函数
的定义域为实数集
,
,对于任意
都有
,若在区间
内函数
恰有三个不同的零点,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e159c7d1541be4a9b1bcc980019ef50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165962501dddc03d1fecb328be8ee00e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833a7bec701e5e2fe110b6c74212b137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82de2c66451048dbb3ad3b75278af733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-03-13更新
|
788次组卷
|
3卷引用:北京市东城区第五中学2019-2020学年高三上学期12月月考数学试题
2014·北京东城·一模
名校
7 . 对任意实数
定义运算“
”:
,设
,
若函数
恰有三个零点,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e16415b61722f9961e412386e6819f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f283a930c2b8661ac90bc22d488f9fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be28b086fd0f31be9c403d67fd67c06.png)
若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783e5db3306917ffb6d8e7bfb78747bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-10-20更新
|
1179次组卷
|
7卷引用:2014届北京市东城区高三下学期综合练习二理科试卷
(已下线)2014届北京市东城区高三下学期综合练习二理科试卷(已下线)2014届北京市东城区高三下学期综合练习二文科试卷2015届安徽省安庆五校联盟高三下学期3月联考数学文科数学试卷山东省菏泽第一中学2018届高三上学期第一次月考数学(理)试题上海市上海中学2019届高三下学期开学摸底数学试题江西省上饶中学2018-2019学年高一上学期期中考试数学试题2【市级联考】辽宁省沈阳市2018-2019学年高一期末数学试题
8 . 已知函数
,
.
(1)当
时,求曲线
在点
处的切线的方程;
(2)若曲线
与
轴有且只有一个交点,求
的取值范围;
(3)设函数
,请写出曲线
与
最多有几个交点.(直接写出结论即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ecf88c5647f13d1c7886da8a7b1bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da989240786ef7c3e2d903f30caf59e3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706a19c530fee983ba3d24079bddb737.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ca643eb4f1093f1e4d430eabddf789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
您最近一年使用:0次
解题方法
9 . 如图所示,正方体
的棱长为1,
分别是棱
,
的中点,过直线
的平面分别与棱
、
交于
,设
,
,给出以下四个命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/5c53e251-4346-4998-867d-e1e90759f9d7.png?resizew=224)
①四边形
为平行四边形;
②若四边形
面积
,则
有最小值;
③若四棱锥
的体积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61eac79ec7913fc950226db18915308.png)
,
,则
常函数;
④若多面体
的体积
,
,则
为单调函数.
其中假命题为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b25f3ea33cc08b1e2a0d9c3a9dccaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af217fbffcef5bd43e1fdc8a7bd6220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/8/5c53e251-4346-4998-867d-e1e90759f9d7.png?resizew=224)
①四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
②若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e92eac740953aa383be636ea90fd47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4ef9a0424161728f65356fa02620b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b941daa059b04aab552429ae22a1661d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61eac79ec7913fc950226db18915308.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572517993783296/1572517999558656/STEM/f6002b804c144dcd95df67c5839e8c6e.png?resizew=12)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c97d54952104950bfd7afc0176bbd0.png)
④若多面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d806315045c99f270687030c61cd8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b11baa5184a3f07f167cc328f1abf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37bc347c13a4d4171648cad72b96e796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
其中假命题为
A.① | B.② | C.③ | D.④ |
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10 . 已知函数
,(
为常数).
(1)若
在
处的切线过点(0,-5),求
的值;
(2)设函数
的导函数为
,若关于
的方程
有唯一解,求实数
的取值范围;
(3)令
,若函数
存在极值,且所有极值之和大于
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1339894f2ed20d537b728d4bad95dc17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381248e1b6c91221cdab853027ff08e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4be680e98d27ff57f980d918d626299d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a16ba078b5be53b366af4b02f73f00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60654c7c7f5fbf6cdab76692158ab6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-04更新
|
989次组卷
|
4卷引用:2015届北京市东城区高三5月综合练习二文科数学试卷