1 . 已知数列
的首项
,
是
与
的等差中项.
(1)求证:数列
是等比数列;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7fa65c121c7b361e141deaeee7a1d67.png)
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2023-10-30更新
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1958次组卷
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9卷引用:甘肃省部分校2024届高三上学期10月质量检测数学试题
甘肃省部分校2024届高三上学期10月质量检测数学试题黑龙江省百师联盟2024届高三一轮复习联考(二)数学试题黑龙江省佳木斯市三校联考2024届高三上学期第三次调研考试数学试题(已下线)模块四 专题6 大题分类练(数列)基础夯实练(人教A)四川省宜宾市南溪第一中学校2024届高三上学期一诊考试理科数学模拟试题(已下线)第二篇 “搞定”解答题前3个 专题2 数列解答题【练】高三逆袭之路突破90分(已下线)专题10 数列不等式的放缩问题 (7大核心考点)(讲义)(已下线)黄金卷08(已下线)题型18 4类数列综合
名校
解题方法
2 . 已知函数
的图象经过
,
两点.
(1)求
的解析式;
(2)判断
在
上的单调性,并用定义法加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc7179a01c937e7a4f3281093bb9d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf57804a00d72521b08f36a3034f83d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7242b2ab643f9470da77e29d043b893.png)
您最近一年使用:0次
名校
解题方法
3 . 已知
,
,
均为正数,且
.
(1)证明:
;
(2)若
,求
,
的值,并比较
,
,
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9d6b8819acd3255b5847b232b22a68.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621f48abde2109af335639d0bfb38560.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03516bfa3479baee370ac5b4f55dee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1d2e5599453f8d4c04369bc8f79962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43557b716fa38a8aeca410d7c8ba1909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d377db95a1606ee92ebfd986625fc5.png)
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解题方法
4 . 设数列
的前n项和为
.
(1)求数列
的通项公式;
(2)设数列
的前n项和为
,且
,求
;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc273cca83b28805871da5e075d9982a.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c0250dcb2a000f60f3e38e5c6fdb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02afb88e9f75094ff7a7918f0751dc14.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7807bf11e3310bf1c864eccf7138fb46.png)
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5 . 已知离心率为
的椭圆
与x轴,y轴正半轴交于
两点,作直线
的平行线交椭圆于
两点.
(1)若
的面积为1,求椭圆的标准方程;
(2)在(1)的条件下,记直线
的斜率分别为
,
,求证:
为定值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(2)在(1)的条件下,记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
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2023-10-07更新
|
1993次组卷
|
5卷引用:甘肃省永昌县第一高级中学2023-2024学年高三上学期10月第一次数学月考试题
甘肃省永昌县第一高级中学2023-2024学年高三上学期10月第一次数学月考试题 贵州省黔东南州从江县2024届高三上学期11月检测数学试题(已下线)考点16 解析几何中的定值问题 2024届高考数学考点总动员【练】湖北省武汉市汉阳区武汉情智学校2023-2024学年高二上学期11月期中考试数学试题(已下线)专题23 椭圆的简单几何性质10种常见考法归类(3)
6 . 如图1,菱形
的边长为
,将其沿
折叠形成如图2所示的三棱锥
.
中,
;
(2)当点A在平面
的投影为
的重心时,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f91983147bd8c69a3a0f819d968162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
(2)当点A在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
名校
7 . 已知函数
,
(1)若
与
有相同的单调区间,求实数
的值;
(2)若方程
有两个不同的实根
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe1f1aba23cff181ad85db0443f8576f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60570958966fbc7f957eab87252dba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03fd662f69ce3e5449c08e00b963194.png)
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2024-03-22更新
|
674次组卷
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3卷引用:甘肃省张掖市某校2024届高三下学期模拟考试数学试题
13-14高三上·甘肃·阶段练习
8 . 如图,已知四棱锥
的底面为直角梯形,
,
,
,
.
与平面
不垂直;
(2)证明:平面
平面
;
(3)如果
,二面角
等于
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bbe4cdd2c154bd9a8073b0d4cecb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f0e183dc8133ad2639368cf9436463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1636b4530c0b42d0e0b649e90e3b9e85.png)
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2024-01-16更新
|
373次组卷
|
8卷引用:2014届甘肃西北师大附中高三11月月考理科数学试卷
(已下线)2014届甘肃西北师大附中高三11月月考理科数学试卷(已下线)2014届甘肃省西北师大附中高三11月月考理科数学试卷上海市复旦中学2023-2024学年高二上学期期末考试数学试卷(已下线)第15讲 8.6.3平面与平面垂直(第2课时)-【帮课堂】(人教A版2019必修第二册)(已下线)13.2.4 平面与平面的位置关系(2)-【帮课堂】(苏教版2019必修第二册)(已下线)第13章 立体几何初步 单元综合检测(重难点)-《重难点题型·高分突破》(苏教版2019必修第二册)(已下线)第13章 立体几何初步 章末题型归纳总结 (2)-【帮课堂】(苏教版2019必修第二册)(已下线)上海市高二下学期期末真题必刷04(压轴题)--高二期末考点大串讲(沪教版2020选修)
9 . 如图,在四棱锥
中,底面
是正方形,平面
平面
,
平面
;
(2)若
是
的中点,平面
与平面
所成锐二面角的余弦值为
,求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c6cc67527976207c8a870c68be9ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
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2024-03-22更新
|
572次组卷
|
3卷引用:甘肃省张掖市某校2024届高三下学期模拟考试数学试题
名校
解题方法
10 . 已知函数
,
,且函数
的零点是函数
的零点.
(1)求实数a的值;
(2)证明:
有唯一零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46ccef5ddef05f2aa8ab837d05b3dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07bfb2f2afc40875321f1dae4044b4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(1)求实数a的值;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
您最近一年使用:0次
2023-10-30更新
|
455次组卷
|
5卷引用:甘肃省部分校2024届高三上学期10月质量检测数学试题
甘肃省部分校2024届高三上学期10月质量检测数学试题黑龙江省百师联盟2024届高三一轮复习联考(二)数学试题(已下线)重难点2-5 利用导数研究零点与隐零点(7题型+满分技巧+限时检测)江西省南昌市第十九中学2024届高三上学期11月期中考试数学试题(已下线)专题1.8 导数的零点问题(强化训练)-2023-2024学年高二数学下学期重难点突破及混淆易错规避(人教A版2019)