名校
1 . 如图,在四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1a92aad15f8e45babf2bc84bfb4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
,
为
的中点,连接
.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899245032554496/2912111437094912/STEM/6125f0f2-cb5e-4362-bb22-3fde17ea0028.png?resizew=197)
(1)求证:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1a92aad15f8e45babf2bc84bfb4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9242c9d6ac1d81f616d900ab3a6ddcc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d18dca4118ad3f45efdbc92e286d634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1184ae384a5a0b4e2f50a69f0c884276.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899245032554496/2912111437094912/STEM/6125f0f2-cb5e-4362-bb22-3fde17ea0028.png?resizew=197)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2022-02-08更新
|
360次组卷
|
2卷引用:重庆市江北区字水中学2023-2024学年高二上学期第四次月考数学试题
名校
解题方法
2 . 函数
对任意实数
恒有
,且当
时,
(1)判断
的奇偶性;
(2)求证∶
是
上的减函数∶
(3)若
,求关于
的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130ea481fadd167c198f6855bba2f654.png)
您最近一年使用:0次
2021-12-10更新
|
1043次组卷
|
6卷引用:重庆市字水中学2021-2022学年高一上学期期中数学试题
名校
解题方法
3 . 已知a,b,c为锐角
的内角A,B,C的对边,满足
.
(1)证明
为等腰三角形;
(2)若
的外接圆面积为
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8afa382ff84d3ec616bcb6475165e802.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb424f99a4afc67a39a6b116ec033e5e.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数
(
).
(1)求函数
的单调区间;
(2)若
在定义域内恒成立,求实数
的取值范围;
(3)证明:
(
,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d729df12e8513ea7df72f1bde5d4b7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2560586e247a78785c55740e61c353a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0e18e3ac01c03d95391637c1a47b19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
您最近一年使用:0次
2021-10-02更新
|
1110次组卷
|
17卷引用:重庆市字水中学2020-2021学年高二下学期期末数学试题
重庆市字水中学2020-2021学年高二下学期期末数学试题2017届山东省实验中学高三第一次诊断数学(理)试卷河南省郑州市第一中学2018届高三上学期期中考试(理科)数学试题山东省曲阜市2018届高三上学期期中考试数学(理)试题安徽省淮北市第一中学2017-2018学年高二下学期第一次月考数学(理)试题【市级联考】江西省鹰潭市2018-2019学年高二上学期期末质量检测数学(文)试题河南省郑州市第一中学2018-2019学年高二下学期期中考试数学(理)试题【校级联考】河南省唐河县友兰实验高中2018-2019学年高二下学期第二次月考(理)数学试题辽宁省鞍山市第一中学2018届高三上学期第一次模拟考试数学(理)试题辽宁省营口市部分重点高中2017-2018学年高二下学期期末考试数学(理)试题重庆市主城区七校2019-2020学年高二下学期期末联考数学试题黑龙江省哈尔滨市第三中学校2020-2021学年高三上学期第一次验收考试理科数学试题江苏省扬州市新华中学2020-2021学年高三上学期第二次月考数学试题人教B版(2019) 选修第三册 突围者 第六章 高考挑战黑龙江省八校2021-2022学年高三上学期期中联合考试数学(理)试题人教B版(2019) 选修第三册 一蹴而就 高考模拟测试卷辽宁省沈阳市沈河区第二中学2021-2022学年高三数学暑假验收试题
名校
5 . 已知函数
,
.
(1)求函数
的单调区间和极值;
(2)若存在
,且当
时,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682a33027db7f4bd31672c0177f57f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d914f739d0635a04e342814fddfbd261.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fd7af568e3d9f444beb0ff41426477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9287242e32ebb4472a7c3f87acd494c2.png)
您最近一年使用:0次
2022-05-02更新
|
1304次组卷
|
8卷引用:重庆市二0三中学校2021-2022学年高二下学期第二次月考数学试题
重庆市二0三中学校2021-2022学年高二下学期第二次月考数学试题安徽省滁州市部分学校2021-2022学年高二下学期4月联考数学试题(已下线)专题06 极值点偏移问题-2021-2022学年高二数学下学期期末必考题型归纳及过关测试(人教A版2019)辽宁省实验中学2022-2023学年度高三上学期12月教学质量检测数学试题辽宁省大连市第八中学2021-2022学年高二下学期期中考试数学试题(已下线)专题突破卷08 极值点偏移(已下线)第九章 导数与三角函数的联袂 专题四 利用导数证明含三角函数的不等式 微点2 利用导数证明含三角函数的不等式(二)(已下线)考点21 导数的应用--极值点偏移问题 2024届高考数学考点总动员
名校
解题方法
6 . 在四棱锥S-ABCD中,底面ABCD为矩形,△SAD为等腰直角三角形,SA=SD=
,AB=2,F是BC的中点,SF与底面ABCD的角等于30°,面SAD与面SBC的交线为m.
![](https://img.xkw.com/dksih/QBM/2021/10/18/2832078255874048/2834117571657728/STEM/bae64167-621a-4050-a385-75018a026226.png?resizew=299)
(1)求证:BC∥m;
(2)求出点E的位置,使得平面SEF⊥平面ABCD,并求二面角S-AD-C的值;
(3)在直线m上是否存在点Q,使二面角F-CD-Q为60°,若不存在,请说明理由,若存在,求线段QD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/2021/10/18/2832078255874048/2834117571657728/STEM/bae64167-621a-4050-a385-75018a026226.png?resizew=299)
(1)求证:BC∥m;
(2)求出点E的位置,使得平面SEF⊥平面ABCD,并求二面角S-AD-C的值;
(3)在直线m上是否存在点Q,使二面角F-CD-Q为60°,若不存在,请说明理由,若存在,求线段QD的长.
您最近一年使用:0次
名校
7 . 已知抛物线
的焦点
在
轴上,过
且垂直于
轴的直线交
于
(点
在第一象限),
两点,且
.
(1)求
的标准方程.
(2)已知
为
的准线,过
的直线
交
于
,
(
,
异于
,
)两点,证明:直线
,
和
相交于一点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dfc9d1109fe41145cc892b5702d9fb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2022-03-24更新
|
853次组卷
|
5卷引用:重庆市第十八中学2023届高三下学期二月开学检测数学试题
名校
解题方法
8 . 设数列
的前
项和为
,已知
,且
.
(1)证明:数列
为等比数列;
(2)若
,是否存在正整数
,使得
对任意
恒成立?若存在、求
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf85d92e4732bef751d8bce7401ff911.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f86e5aaea193d51fa06c58abb3898b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af63edc08ad2cd150e258c5ce9417921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcfd3d418791f85a6803ec3814c5623b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2022-01-12更新
|
483次组卷
|
2卷引用:重庆市江北区字水中学2023-2024学年高二上学期第一次月考数学试题
名校
解题方法
9 . 已知点A,B关于原点O对称,点A在直线
上,
,圆Q过点A,B且与直线
相切,设圆心Q的横坐标为a.
(1)求圆Q的半径;
(2)已知点
,当
时,作直线
与圆Q相交于不同的两点M,N,已知直线
不经过点P,且直线PM,PN斜率之和为-1,求证:直线
恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5a64bcb77f5f64e4af6930c249a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fa7155f6858a570e8dee2495822a3.png)
(1)求圆Q的半径;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7cfada8fd642ddf968bfd4228d48ec3.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2021-11-16更新
|
154次组卷
|
3卷引用:重庆十八中两江实验中学2021-2022学年高二上学期期中数学试题
名校
解题方法
10 . 1.如图所示,已知平行四边形
中,
,
,
,
,垂足为
,沿直线
将
翻折成
,使得平面
平面
;连接
,
是
上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/b5491256-fa9a-451f-a754-8776122f48be.png?resizew=494)
(1)当
时,求证:
平面
;
(2)当
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d79e7020414add95907e061df505ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da5fbf1298eca6853f9febfd4a07440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09a769a75b107390b9eeccc929f761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb0a272d6917c569c36b60dd9ec8094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73612d2cce34e663255c76ccab2d892a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab41cce6eb2d3058a644314865d16548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab41cce6eb2d3058a644314865d16548.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/b5491256-fa9a-451f-a754-8776122f48be.png?resizew=494)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07d047a406fbf8cd353a5aed9bf0c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e245440d3761fb4217eaa8dc303fa288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce36044e81456a40b5f63749c814e5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ddbc03b14bc6a863989f2ab6048e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471c511dc9f95ac5eb4784a105aee9e0.png)
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2021-11-09更新
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4卷引用:重庆市江北区字水中学2023-2024学年高二上学期第四次月考数学试题