名校
1 . 平均值不等式是最基本的重要不等式之一,在不等式理论研究和证明中占有重要的位置,基本不等式
就是最简单的平均值不等式.一般地,假设
为n个非负实数,它们的算术平均值记为
(注:
),几何平均值记为
亦(注:
),算术平均值与几何平均值之间有如下的关系:
,即
,当且仅当
时等号成立,上述不等式称为平均值不等式,或简称为均值不等式.
(1)已知
,求
的最小值;
(2)已知正项数列
,前n项和为
.
(i)当
时,求证:
;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb90c316d8a99694396de80ed0b0cf25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2b043b989216035c6fd985f1dd6a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62039675c3c14eb40435c837baac504b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616f78142aa5d339a92737356cb5f034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3381745623cb1a441da9c0d591eb5fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7cdd81b8b615961adae7ec165aacfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434d0c6ca47b1b7af2f3ff0b7663d908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c294bd0c22262b46c1ba57f8f1dc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cc4e11e7cd0174262dfe66662a6a33.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d229cbec798c9c278a9b5979cb38247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59149e37a56078d30e6e734fde3d6f5f.png)
(2)已知正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(i)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d72bba8881efc02361163a97c6dde32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9021d923afeecdbb8c55e283c26704a.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237e3090bb2c02d7b62fa5d3d41b63b5.png)
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名校
解题方法
2 . 定义:函数
满足对于任意不同的
,都有
,则称
为
上的“
类函数”.
(1)若
,判断
是否为
上的“2类函数”;
(2)若
为
上的“3类函数”,求实数a的取值范围;
(3)若
为
上的“2类函数”,且
,证明:
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d6fe21d6ed78bfc1d2b9cc41a766c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2a699f43d6836c18eaced5758a37a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ece875296333d786d8a671b2749255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93ed0f3a123e0e3b1c08db887fa1697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47e734b17201fe992be7775714e9558.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2db4bd08a64c7ceefac83e2fce50b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea6e1bfbda5c4f6421ed18e802aba04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1ab2e5e3dd3a1c768a88eb182b44d9.png)
您最近一年使用:0次
2024-06-04更新
|
379次组卷
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2卷引用:重庆市求精中学校2023-2024学年高二下学期第二阶段考试数学试题
3 . 设p为任意给定的大于1的整数,每个正整数n均可以唯一地表示成
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9065ce45fd23edbaf85a45ff15c2fc6d.png)
,我们将
称为n的p进制表示,将
称为n在p进制下的数字和.例如:由
可知
,
.
(1)请给出2024的三进制表示;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3f3539f44a967ded37d695b8c5a754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9065ce45fd23edbaf85a45ff15c2fc6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb7c6bb11637246e20a186de268f0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d451ea758732eb3e8530a0e510efd835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce766f5a782ee1123eaaf4ec9773f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efa82a1ee441389e563ed32c2c660b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf0d4f1ae3c405709ffc9215063ee21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10a86dea76b9b21e2c221fab3a6a167.png)
(1)请给出2024的三进制表示;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f8cbdf6bfa897019ce1eb963a869f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c363c1fc5f6c82234385e8e96fb644.png)
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名校
解题方法
4 . 设
,
.如果存在
使得
,那么就说
可被
整除(或
整除
),记做
且称
是
的倍数,
是
的约数(也可称为除数、因数).
不能被
整除就记做
.由整除的定义,不难得出整除的下面几条性质:①若
,
,则
;②
,
互质,若
,
,则
;③若
,则
,其中
.
(1)若数列
满足,
,其前
项和为
,证明:
;
(2)若
为奇数,求证:
能被
整除;
(3)对于整数
与
,
,求证:
可整除
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72ea8ec0d9f8b1cfc4de834b8bfb608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87803b7cee18366b89d51799250df510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6705dba65746e1d4cac6a268b3c806ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020e12ff4f028aba3a205a95e650d72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79bda3d07c2fef4d6af4a13ade4c743e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/020e12ff4f028aba3a205a95e650d72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4d6df2a57b7e5be32c05c10257ea6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91638bacbf4d15736d26713ba90e0fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91638bacbf4d15736d26713ba90e0fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4d6df2a57b7e5be32c05c10257ea6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0601879ae4ca9592246d135bfa48658c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383eb235f8e0ceda13367b16d29e0180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503618b9bfb53a06f0ec6a5e427dcdbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0da20edf2714109dcfded7e212ec44a.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12059d1dac926a235ccd40c3b61b1b6.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/ed9dbd8ed61db4f1c14f6b0e5f071200.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1e4de97f8490fddcff16afe8583266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(3)对于整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b96cdd9e003120b6102d927dbf53e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5009ce2d56180d31204f77c871fb375c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b326965628b5d967aafe9e696fdc07.png)
您最近一年使用:0次
2024-05-19更新
|
541次组卷
|
2卷引用:河南省驻马店市新蔡县第一高级中学2023-2024学年高二下学期6月月考数学试题
名校
解题方法
5 . 定义1 进位制:进位制是人们为了计数和运算方便而约定的记数系统,约定满二进一,就是二进制:满十进一,就是十进制;满十二进一,就是十二进制;满六十进一,就是六十进制;等等.也就是说,“满几进一”就是几进制,几进制的基数就是几,一般地,若
是一个大于1的整数,那么以
为基数的
进制数可以表示为一串数字符号连写在一起的形式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524f146ae1dcf0aa3e8d526945238342.png)
进制的数也可以表示成不同位上数字符号与基数的幂的乘积之和的形式.如
.
定义2 三角形数:形如
,即
的数叫做三角形数.
(1)若
是三角形数,试写出一个满足条件的
的值;
(2)若
是完全平方数,求
的值;
(3)已知
,设数列
的前
项和为
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/524f146ae1dcf0aa3e8d526945238342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5056dd0d5ad0eff9e95291b04d3553b1.png)
定义2 三角形数:形如
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73590d366136e56ab9a92db739b0762d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a46706761370c3a424c0ca83906f0f6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694c82f33ec815778a6d49bfdcd1628b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a48c2531616a8dfbbc06a97868b72cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/571561f8606c5f39c4cd4f64d2d44aa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.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/029da2067b3564cee13879e402a89a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21510d169a75d5f8b50e985aac26fe70.png)
您最近一年使用:0次
2024-05-08更新
|
478次组卷
|
2卷引用:湖南省常德市汉寿县第一中学2023-2024学年高二下学期6月期末考试数学试题
名校
解题方法
6 . 数列
中,从第二项起,每一项与其前一项的差组成的数列
称为
的一阶差数列,记为
,依此类推,
的一阶差数列称为
的二阶差数列,记为
,….如果一个数列
的p阶差数列
是等比数列,则称数列
为p阶等比数列
.
(1)已知数列
满足
,
.
(ⅰ)求
,
,
;
(ⅱ)证明:
是一阶等比数列;
(2)已知数列
为二阶等比数列,其前5项分别为
,求
及满足
为整数的所有n值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82c65a855b1eed9c43e6829f6c3bffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c599a8303d934678c8cae0ed864b776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c599a8303d934678c8cae0ed864b776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5452a758da0f722da03128a5eb3ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f88267cbc5e8e016b1a92bcf0fb27d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281cde49dcc279bdc6b2a99edafe19da.png)
(1)已知数列
![](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/3998df04d0a8ded946c3f39d545fdc7e.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f94c7bb2d2afc4196b15f6879ddf86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e9e4a01bdaa1f768225e055b6c6d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13df1f8f074ab49fc065ed0da2d5aff.png)
(ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0965cc6a58c25d9ba7876da319a8cae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
您最近一年使用:0次
2024-05-07更新
|
973次组卷
|
5卷引用:北京市中国人民大学附属中学2023-2024学年高二下学期统练3数学试题
北京市中国人民大学附属中学2023-2024学年高二下学期统练3数学试题(已下线)专题04 高二下期末考前必刷卷02(提高卷)--高二期末考点大串讲(人教A版2019)2024届山东省潍坊市二模数学试题吉林市第一中学2024届高三高考适应性训练(二)数学试题2024届吉林省吉林市第一中学高三数学适应性试卷(二)
7 .
表示正整数a,b的最大公约数,若
,且
,
,则将k的最大值记为
,例如:
,
.
(1)求
,
,
;
(2)已知
时,
.
(i)求
;
(ii)设
,数列
的前n项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6294a700967de01e6877d686a0e2e79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4160299bf93e7827b97bc5cbb224958e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4c95177c5f6454d2de54bb7b0c182ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4b8114fcc770a8512cf03da137ca4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9edd29e22f6a7f4d14d9f8d2684d47e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5491950d23d0f3833de05cc3892cacd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a7f848e0002222e3fe290e50301e3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ccc57e5668f2a2c1cbc078a767b6855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16edf0bda2c47ed55f471a1838cd03dc.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853030075597faf459bec65cd5e0b910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b8178596507fe45cea77096a53d6395.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce2bf4a86671ab5cefa4d523d8a0fa2.png)
(ii)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beafadba27d9c078bae7761a2b383803.png)
![](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/47b61920582cc3edd43e273e0cbfa1d4.png)
您最近一年使用:0次
2024-03-26更新
|
1830次组卷
|
8卷引用:广东省佛山市顺德区第一中学西南学校2023-2024学年高二下学期第一次月考数学试卷
广东省佛山市顺德区第一中学西南学校2023-2024学年高二下学期第一次月考数学试卷四川省成都市实验外国语学校2023-2024学年高二下学期第一次阶段考试数学试题辽宁省重点高中沈阳市郊联体2023-2024学年高二下学期4月月考数学试卷(已下线)模块五 专题3 全真能力模拟3(人教B版高二期中研习)(已下线)模块四专题6重组综合练(四川)(8+3+3+5模式)(北师大版高二)福建省泉州市2024届高三质量监测(三)数学试题(已下线)压轴题05数列压轴题15题型汇总-3重庆市第十一中学校2023-2024学年高三第九次质量检测数学试题
8 . 已知数列
的前
项和为
,若数列
满足:①数列
项数有限为
;②
;③
,则称数列
为“
阶可控摇摆数列”.
(1)若等比数列
为“10阶可控摇摆数列”,求
的通项公式;
(2)若等差数列
为“
阶可控摇摆数列”,且
,求数列
的通项公式;
(3)已知数列
为“
阶可控摇摆数列”,且存在
,使得
,探究:数列
能否为“
阶可控摇摆数列”,若能,请给出证明过程;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4ed75729a7f7a2d5a3d9f7293c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1798fb0c31c65218cd20e07320a17d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)若等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bdaa641d2e7e17904c61ff7245a5cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7364bbda64feeb4d448f9316d4c67a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa22ba45c62adc96ffe508594edd6900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daca8076f0553088afded57b48009d37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae2ea9de54e074c145b8259f6c55e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d013861990cf331c82eb453416ae31bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2024-03-21更新
|
1440次组卷
|
6卷引用:山东省淄博市实验中学2023-2024学年高二下学期第一次月考(3月)数学试卷
山东省淄博市实验中学2023-2024学年高二下学期第一次月考(3月)数学试卷吉林省白山市2024届高三第二次模拟考试数学试题江西省2024届高三下学期二轮复习阶段性检测数学试题(已下线)数学(广东专用01,新题型结构)吉林省通化市梅河口市第五中学2024届高三下学期二模数学试题(已下线)压轴题05数列压轴题15题型汇总-1
9 . 如图,为了测量某塔的高度,无人机在与塔底B位于同一水平面的C点测得塔顶A的仰角为45°,无人机沿着仰角α(
)的方向靠近塔,飞行了
m后到达D点,在D点测得塔顶A的仰角为26°,塔底B的俯角为45°,且A,B,C,D四点在同一平面上,求该塔的高度.(参考数据:取 tan 26°=
,cos 56°=
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1c17a53981687048cb4906307f8b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2eae4bfb82c3ab183c4d47b4ea12a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b696b79a748797ef1e56fa31ee9a450d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/510ecde0-f63f-4f01-bf7d-2713f863f92f.png?resizew=142)
您最近一年使用:0次
名校
10 . 已知函数
.
(1)若函数
有3个不同的零点,求a的取值范围;
(2)已知
为函数
的导函数,
在
上有极小值0,对于某点
,
在P点的切线方程为
,若对于
,都有
,则称P为好点.
①求a的值;
②求所有的好点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261bed360289f37d94f742ab63676e45.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25be20e3724274132cb83b16deaeecfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02af34501d48e2349967ecdfbfa6c1f8.png)
①求a的值;
②求所有的好点.
您最近一年使用:0次
2024-03-08更新
|
1397次组卷
|
4卷引用:重庆市南开中学校2023-2024学年高二下学期3月定时练习数学试题