名校
解题方法
1 . 若函数
满足:对任意的实数
,
,有
恒成立,则称函数
为 “
增函数” .
(1)求证:函数
不是“
增函数”;
(2)若函数
是“
增函数”,求实数
的取值范围;
(3)设
,若曲线
在
处的切线方程为
,求
的值,并证明函数
是“
增函数”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9cec0474c43086ea39cb457048313c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dca031c9a6a1199cfee4c3d91c52099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916ae6490922319a1d394fbedd8d951a.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916ae6490922319a1d394fbedd8d951a.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b34671abe25726a52a57850ab248fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916ae6490922319a1d394fbedd8d951a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/974f122681f314e8202e02861cabf8cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916ae6490922319a1d394fbedd8d951a.png)
您最近一年使用:0次
2023-12-21更新
|
734次组卷
|
5卷引用:四川省屏山县中学校2023-2024学年高二下学期第一次阶段性考试数学试题
四川省屏山县中学校2023-2024学年高二下学期第一次阶段性考试数学试题重庆市育才中学校2023-2024学年高二下学期三月拔尖强基联盟联合考试巩固测试数学试题(已下线)上海市高二下学期期末真题必刷03(常考题)--高二期末考点大串讲(沪教版2020选修)上海市奉贤区2024届高三一模数学试题(已下线)上海市奉贤区2024届高三一模数学试题变式题16-21
名校
解题方法
2 . 如图所示,在直三棱柱ABC-A1B1C1中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932407529332736/2946023371005952/STEM/50a6e23377b94677b1e2de384ab39108.png?resizew=206)
(1)当P为B1C的中点时,求证:A1B1
平面APC1;
(2)试在线段B1C上找一点P(异于B1,C点),使得
,并证明你的结论;
(3)当
时,求多面体A1B1C1PA的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df09d04a0c1a9c47aa547811469a6e0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://img.xkw.com/dksih/QBM/2022/3/9/2932407529332736/2946023371005952/STEM/50a6e23377b94677b1e2de384ab39108.png?resizew=206)
(1)当P为B1C的中点时,求证:A1B1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
(2)试在线段B1C上找一点P(异于B1,C点),使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34b7435f674beb041681fd5615a5b88.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34b7435f674beb041681fd5615a5b88.png)
您最近一年使用:0次
2022-03-28更新
|
204次组卷
|
2卷引用:四川省宜宾市第四中学校2022-2023学年高二上学期期中考试数学(文)试题
名校
解题方法
3 . 如图,矩形
和菱形
所在平面互相垂直,已知
,点
是线段
的中点.
![](https://img.xkw.com/dksih/QBM/2020/5/25/2470191668011008/2471024428015616/STEM/bfcfc018-6486-4e2e-add8-4df51f005ed0.png)
(1)求证:
;
(2)试问在线段
上是否存在点
,使得直线
平面
?若存在,请证明
平面
,并求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a466276f3b4a9a59addcaa6f68b6a850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2020/5/25/2470191668011008/2471024428015616/STEM/bfcfc018-6486-4e2e-add8-4df51f005ed0.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483c46bdddab303f70f7678bbdb2f8c4.png)
(2)试问在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb9d79cc1792a9ba646459155877f4d.png)
您最近一年使用:0次
2020-05-26更新
|
307次组卷
|
2卷引用:四川省宜宾市叙州区第一中学校2019-2020学年高二下学期期中考试数学(文)试题
名校
4 . 已知函数
,其中
.
(Ⅰ)讨论
的单调性;
(Ⅱ)当
时,证明:
;
(Ⅲ)求证:对任意正整数n,都有
(其中e≈2.7183为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9f7cb75c5500ad56dfe0f178dedb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(Ⅰ)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257810d08006d4b886331966c99767ea.png)
(Ⅲ)求证:对任意正整数n,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0f4b1e329db4bf6070f993297f9b9.png)
您最近一年使用:0次
2019-01-12更新
|
4102次组卷
|
10卷引用:四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(理)试题
四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(理)试题四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(文)试题【全国百强校】四川省成都市成都外国语学校2018-2019学年高二下学期期中考试文科数学试题湖北省武汉二中2019-2020学年高二下学期4月第二次线上测试数学试题广东省佛山市三水区三水中学2019-2020学年高二下学期第二次统考数学试题【区级联考】天津市蓟州等部分区2019届高三上学期期末联考数学(文)试题【区级联考】天津市部分区2019届高三(上)期末数学(文科)试题【全国百强校】河北省武邑中学2019届高三下学期第一次模拟考试数学(文)试题江西省五市八校2019-2020学年高三第二次联考文科数学试题黑龙江省大庆实验中学2019届高三普通高等学校招生全国统一考试文科数学模拟试题
5 . 如图,在四棱锥
中,
平面
,底面
为矩形,
为
中点,
.
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed04b01505bbd8a4ac0bc12e46f23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e3e9ca3554de7b4586b12f498d8a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aeacbf91ac53ebfba0383bf1994bbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f09ad78d4eccd1a9c9ccd3c4af79c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05479863cf9f41e2ad9f843ea740a3c0.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8784cbba54459e4fcb792a8a831ff78d.png)
您最近一年使用:0次
2023-12-07更新
|
1177次组卷
|
4卷引用:四川省宜宾市叙州区第二中学校2023-2024学年高二下学期第一学月考试数学试题
四川省宜宾市叙州区第二中学校2023-2024学年高二下学期第一学月考试数学试题四川省南充市嘉陵第一中学2023-2024学年高二下学期第一次月考数学试题安徽省名校联盟2024届高三上学期12月联考数学试题(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
名校
解题方法
6 . 已知椭圆
:
的左顶点为
,焦距为
.动圆
的圆心坐标是
,过点
作圆
的两条切线分别交椭圆于
和
两点,记直线
、
的斜率分别为
和
.
(1)求证:
;
(2)若
为坐标原点,作
,垂足为
.是否存在定点
,使得
为定值?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b728c0e69820cdcd839e67ffdb1014.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c922f835c095ce76ccef75e396b1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
您最近一年使用:0次
2023-11-09更新
|
779次组卷
|
3卷引用:四川省宜宾市第四中学校2023-2024学年高二上学期12月月考数学试题
解题方法
7 . 如图,在四棱柱
中,底面
和侧面
都是矩形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/1cab666e-9ec1-474d-a893-464b61ec522d.png?resizew=170)
(1)求证:
;
(2)若点
的在线段
上,且二面角
的大小为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af4eb75797c8d4fe030a15cc62e20272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526908dfb46cf151b8ab1492a9d52047.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/1cab666e-9ec1-474d-a893-464b61ec522d.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354e321ac9ab002db04261253b19ba9d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d9f756419912dd298a0d6857130c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b142f8f07d7a29789fcfde04a6b25713.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,在四棱锥
中,
,
,
,平面
平面
.
平面
;
(2)设
,
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af620f6d204d310d8e3f267fdd6c3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7812ef34a2b02f9ce73952d5db2eee35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d1553f6806c1eee3b17b94d23f0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21665d21bbfb04410c78345de1fd15ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04f300403bc4c84663b06e8534f6576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29373112b7e2448686d95d88b2d44045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dd9f16a5c7a66e62e52fd66f4449ee.png)
您最近一年使用:0次
2024-01-15更新
|
313次组卷
|
5卷引用:四川省宜宾市翠屏区宜宾市第四中学校2022-2023学年高二下学期期末数学(文)试题
四川省宜宾市翠屏区宜宾市第四中学校2022-2023学年高二下学期期末数学(文)试题陕西省西安市长安区第一中学2022-2023学年高二上学期期末文科数学试题(已下线)期末真题必刷易错60题(32个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)(已下线)专题8.8 空间中的线面位置关系大题专项训练【七大题型】-举一反三系列(已下线)专题08 立体几何异面直线所成角、线面角、面面角及平行和垂直的证明 -《期末真题分类汇编》(北师大版(2019))
9 . 如图,在四棱锥P—ABCD中,平面
平面ABCD,
,
,M为棱PC的中点.
平面PAD;
(2)若
,求二面角
的余弦值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ad6a0124359e8b9f7649cf0bff51ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca91743fcdc23d0276a543813ec825fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c098151bc644ca1eda2a76032927f82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f369bec2d5682bf6b8b317a08aff546.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c651b55c0ad7f63e3451557ab4c378be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b270c5d399f46eb9048aeebf7a1fe174.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在四棱锥
中,四边形ABCD是菱形,
,
,点E是棱
上的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/1e597253-bad7-4c0e-be50-33b3b0ba7380.png?resizew=181)
(1)求证:平面
平面
;
(2)若
,直线
与平面
所成角的正弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2551d93b674b9f8bcd0e88454c99eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/14/1e597253-bad7-4c0e-be50-33b3b0ba7380.png?resizew=181)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c85aeab3aeaf4367b711da8cde2e8bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2215de6d4986954c95a5b711fd05aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7035d954e76a15924de818e7e10e924a.png)
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2023-11-19更新
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2卷引用:四川省宜宾市棠湖高级中学2023-2024学年高二上学期阶段测试三(12月月考)数学试题