1 . 已知数列
的前
项和为
,且
对于
恒成立,若定义
,
,则以下说法正确的是( )
![](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/204fe825361c413ddc828c5505476789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac657ea5bbf4b237a30e4074c76cc81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac64b041aafdf33ee9816f4d70175a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8665563867d19ec3a09ba96cabb0a8f4.png)
A.![]() | B.![]() |
C.![]() | D.存在![]() ![]() |
您最近一年使用:0次
2022-04-07更新
|
2506次组卷
|
7卷引用:江苏省南京市第一中学2023届高三下学期2月期初考试数学试题
江苏省南京市第一中学2023届高三下学期2月期初考试数学试题湖北省二十一所重点中学2022届高三下学期第三次联考数学试题(已下线)考点13 数列概念及通项公式(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)粤湘鄂名校联盟2023届高三上学期第一次联考数学试题(已下线)山东省青岛第二中学2022-2023学年高三上学期1月期末测试数学试题变式题11-16山东省菏泽市菏泽一中八一路校区2024届高三上学期12月月考数学试题河南省焦作市博爱县第一中学2024届高三下学期4月月考数学试题
解题方法
2 . 如图所示,
,
,…,
,…是曲线
(
)上的点,
,
,…,
,…是x轴正半轴上的点,且
,
,…,
,…均为等腰直角三角形(
为坐标原点).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/1ffc8f62-96ab-455a-9972-4df3009665de.png?resizew=238)
(1)求数列
的通项公式;
(2)设
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b225d772013d021cf1bfe7b9421fa5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b7e35faab6d74fa0c36599c39d1698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c051c2459ca7e2edd8ece9e565ec4b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2d78b119739a1242e1ae274a9198a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc65d6eb9b63f96d80b54ec9893aee8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2326cb86431ec57dededd7c9ed60a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba15787e7f3851a3f24936000212296e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b25286f6029da66ce5270aacd05184f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f097e3c2591eeae50ba0d92b984d625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add8209d60d4bb35d09a0338d3e5e165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6696f67db73ba4a3eca968af0323f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/1ffc8f62-96ab-455a-9972-4df3009665de.png?resizew=238)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a388dd60ad00d4874a9af61a1d09f054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2021-09-25更新
|
555次组卷
|
2卷引用:江苏省南通、盐城 、淮安、 宿迁等地部分学校2021-2022学年高一上学期第一次大联考数学试题
20-21高三上·江苏南通·期末
解题方法
3 . 已知函数
,
.
(1)若关于.
的不等式
对任意的
恒成立,求实数
的取值范围;
(2)设
,
.
①求证:
;
②若数列
满足
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc142c4a9f9c8505e7824361a9003099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(1)若关于.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2475f4a516b408e9c1a1f81bc013b71f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7780ab2eba3eaa3d391a8d5ee712485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2788f2efd111b65f7458002508765c56.png)
②若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4b41419ce9ed61c73bfe422e738c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2c8eb8fd8d5ad456dcf7c3e3279da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d77a6078beed1d99f07c5cbb5ff4484.png)
您最近一年使用:0次
名校
解题方法
4 . 若实数列
满足条件
,
、
、
,则称
是一个“凸数列”.
(1)判断数列
和
是否为“凸数列”?
(2)若
是一个“凸数列”,证明:对正整数
、
、
,当
时,有
;
(3)若
是一个“凸数列”,证明:对
,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8414472e2121e1796eb40408d820053a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9c3bf014213b50c1ce94d96f07dbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da367d9a7896e0eb1b8fdc91918f19f2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf09cb20d3ac1ee84b63893098f56f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce97bb4c969108ebef4ebadd5acc5ca4.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef835c9ad2636a9662fb6c99e3abc78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2400554b00420e4f4040f3b10e1bf73f.png)
您最近一年使用:0次
解题方法
5 . 已知函数
,设
,其中
,方程
和方程
根的个数分别为
.
(1)求
的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662efab1df249abe7d6054ccd16e3d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21420dd916b32e2cc08ab1eac348bb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab7bb40f58f28c9799b20f91d15d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a1d99e29458005cece4efb2d7349ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3c9c43aabf2d057c539740b081f07a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65baa63a788455c2106aa8285ecb2a7d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7473709ab426b4d6e05a28d03ac97d39.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e69ddddaeda0a61e69224357cc3bbf.png)
您最近一年使用:0次
2020-02-25更新
|
605次组卷
|
3卷引用:专题20 数学归纳法及其证明-《巅峰冲刺2020年高考之二轮专项提升》[江苏]
名校
解题方法
6 . 数列
,
,
(
)
(1)是否存在常数
,使得数列
是等比数列,若存在,求出
的值若不存在,说明理由;
(2)设
,证明:当
时,
.
![](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/483bf3858e5dcdb2bcd2532d232aabda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec6fb9e0625b85be3103d317fbb0cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1761de3795504d0ec416973430e3458d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec6fb9e0625b85be3103d317fbb0cca.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6308c1c4ae22bd1e02470e067c376e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0215573641a657fdf1aa67edb4faba2.png)
您最近一年使用:0次
7 . 已知数列
,
,…,
的项
,其中
…,
,
,其前
项和为
,记
除以3余数为1的数列
,
,…,
的个数构成的数列为
,
.
(1)求
的值;
(2)求数列
的通项公式,并化简.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477a1ff38aabe1a29f5bccd63500f339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fcd8c5ff000f78cf14b0db5cf00a742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6870663c08a264a61ced4f12957fcf46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08708dbc4cd3b098e0646d62f305681c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08708dbc4cd3b098e0646d62f305681c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bf6071c209699ee6bd8e6199164617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3bf6071c209699ee6bd8e6199164617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477a1ff38aabe1a29f5bccd63500f339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
(
),
是关于
的
次多项式;
(1)若
恒成立,求
和
的值;并写出一个满足条件的
的表达式,无需证明.
(2)求证:对于任意给定的正整数
,都存在与
无关的常数
,
,
,…,
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9b6dcc5fb7c9eec9a3b27af205c5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fdfd4521a244a8ceebf826a07a007db.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023c423be184bacdd2437bb47923b459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ecec52a8388568b0f5cfd6fc2fb1d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fbe892f3308c1c205ad2503ae1fe2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83fc31a53132a61cee56fd7c64251703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)求证:对于任意给定的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f7dcce39f3d4dc6b7faf84dc1d0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9b6dcc5fb7c9eec9a3b27af205c5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fdfd4521a244a8ceebf826a07a007db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97a6c4a13e245d5aa13a20f718beadb.png)
您最近一年使用:0次
2016-12-03更新
|
490次组卷
|
2卷引用:2015届江苏省泰州市高三第二次模拟考试数学试卷