1 . 已知数列
满足
,
,且
.
(1)求证:数列
为等比数列;
(2)若
,求数列
的前n项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d292da83f1502449e6118c83e4a94d5f.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82c65a855b1eed9c43e6829f6c3bffb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34f2503b45b54100a1c9f9b000860c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
解题方法
2 . 记
的内角
的对边分别为
,且
.
(1)证明:
为等腰直角三角形;
(2)已知
,直线
与
相交于点
,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085dd6805c633426b995146e74654dcb.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b423b202d9d56cf36f3bf96fcb1277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45a8a837c11c07073da3ff751d70278.png)
您最近一年使用:0次
2023-10-29更新
|
571次组卷
|
2卷引用:重庆市第八中学校2024届高三上学期10月期中数学试题
3 . 已知数列
满足
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa5700d9cdf20dd4bd05bf597229065.png)
(1)记
,求证:
为等比数列;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa5700d9cdf20dd4bd05bf597229065.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f2cd7832afe02641ca767c8f0b45a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde513254e2cff153fdc6306ebc1c4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
您最近一年使用:0次
2023-07-27更新
|
1573次组卷
|
4卷引用:重庆市第一中学校2024届高三上学期九月测试数学试题
名校
解题方法
4 . 已知
,非空集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898fb2bc424ef45953524510f82ae36f.png)
(1)证明:
的充要条件是
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d7ed6f4b0e08cd887d2fdc2a5e37e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898fb2bc424ef45953524510f82ae36f.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8cdf3fa28452900663354a54a8f3175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a783088120d67cc98936081e80fb7f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98816a922b6dd4704b3f95adc77cb7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
5 . 已知函数
.
(1)求证:当
时,
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a201ff504425e3c70bc45d676b98a57b.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586f726bb029804856ff791d1bb53872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78e8c50ee585b738d20f54784a2864c.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,在棱长为2的正方体
中,点M是正方体的中心,将四棱锥
绕直线
逆时针旋转
后,得到四棱锥
.
(1)若
,求证:平面
平面
;
(2)是否存在
,使得直线
平面
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debc6eb7acc1f38ef267ce976bc08891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a998a7d4d980e848ee050b706480ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72df364fb19388f4a9f691fb04e6851.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/30/afe35217-4701-42ef-bbdf-faf10f484d5b.png?resizew=248)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1676b17f3641daf630f709517d22d120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5be36f9e19c964499c21a59f90ce21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715c368ff97dfe2f168c15bc6a3fe9a3.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3fdee3ca530bf2fe6583112972e63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2023-08-29更新
|
2747次组卷
|
16卷引用:重庆市第一中学教育共同体2022-2023学年高一下学期期中数学试题
重庆市第一中学教育共同体2022-2023学年高一下学期期中数学试题湖北省圆创联考2023届高三下学期3月联合测评数学试题(已下线)第85练 计算速度训练5(已下线)押新高考第20题 立体几何湖北省武汉市华中师范大学第一附属中学2022-2023学年高一下学期学业水平质量评价检测数学试题福建省永春县第一中学2023-2024学年高二上学期8月月考数学试题(已下线)第七章 立体几何与空间向量 第五节 空间向量与线、面位置关系(B素养提升卷)(已下线)高二上学期期中考试解答题压轴题50题专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)福建省厦门市厦门大学附属科技中学2023-2024学年高二上学期第一次阶段性测试数学试题(已下线)模块一 专题1 空间向量与立体几何(人教A)2广东省东莞市虎门外语学校2023-2024学年高二上学期10月月考数学试题(已下线)模块四 专题4 大题分类练 《空间向量与立体几何》拔高能力练(已下线)重难点突破06 立体几何解答题最全归纳总结(九大题型)-3辽宁省沈阳市东北育才学校2024届高三第三次模拟考试数学试题(已下线)热点6-1 线线、线面、面面的平行与垂直(6题型+满分技巧+限时检测)(已下线)3.4.1 判断空间直线、平面的位置关系(六大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
名校
7 . 已知实数
,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aabf86f0e6f92d6f48d264d275c8b70.png)
(1)证明:(i)
存在唯一的极小值点
;
(ii)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ccf6202aa26899b445c1a3439b0ab1.png)
(2)证明:
有三个不相等的零点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e763ae04b91ef2b97333fc6da9c81ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aabf86f0e6f92d6f48d264d275c8b70.png)
(1)证明:(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(ii)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ccf6202aa26899b445c1a3439b0ab1.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c06068ac2d0da29abec54df3f84347.png)
您最近一年使用:0次
8 . 记
为数列
的前
项和,
为数列
的前
项和,若
且
.
(1)证明:数列
是等比数列;
(2)若
成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8251ae667250fb36ce4c0d75228317.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f86e5aaea193d51fa06c58abb3898b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c364305551ca3312dfb6bd3dc3a6de2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2023-10-02更新
|
777次组卷
|
3卷引用:重庆市第一中学校2024届高三上学期9月月考数学试题
名校
9 . 如图,在三棱锥
中,平面
平面
,
为等腰直角三角形,其中
,
为
中点.
(1)证明:平面
平面
;
(2)已知
,二面角
的大小为
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed0ad6e27ea2d5d028f0f76043ccb1f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ddc76d96d6951ebfef3fe63892a1114.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850e76c9a5c40c2ce950fa4a45388710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816b7f285cc55bbe5bf873538ba87230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
您最近一年使用:0次
10 . 已知点
在双曲线
上.
(1)已知点
为双曲线右支上除右顶点外的任意点,证明:点
到
的两条渐近线的距离之积为定值:
(2)已知点
,过点
作斜率为
的动直线
与双曲线右支交于不同的两点
,在线段
上取异于点
的点
,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad01b0639b0b618c9128df2a5d1315c.png)
(i)求斜率
的取值范围:
(ii)证明:点
恒在一条定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2702066c515f9b77353cfba5f9e33c0.png)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f85f1a0c955c915aefe3fcdc9d7eed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e203b7c9a6600e0272c58a23733490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e203b7c9a6600e0272c58a23733490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad01b0639b0b618c9128df2a5d1315c.png)
(i)求斜率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(ii)证明:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
您最近一年使用:0次