名校
1 . 若数列
的各项均为正数,且对任意的相邻三项
,都满足
,则称该数列为“对数性凸数列”,若对任意的相邻三项
,都满足
则称该数列为“凸数列”.
(1)已知正项数列
是一个“凸数列”,且
,(其中
为自然常数,
),证明:数列
是一个“对数性凸数列”,且有
;
(2)若关于
的函数
有三个零点,其中
.证明:数列
是一个“对数性凸数列”:
(3)设正项数列
是一个“对数性凸数列”,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5323231f6376db726f6fba9dd53b97a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345367d7aac000974ce1e3cf4ce1b15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5323231f6376db726f6fba9dd53b97a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870910beaaf7bd60242701ad7ddaf06b.png)
(1)已知正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a11176eb502db16e19c38278b77e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1e49907ec00414cee66b1d082183fb.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fe507c4d73de71c69ede4cfbdc7fb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02ab7609f5b06fc564e8e588f378870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a447e5baee4f7518706498d4aca7553b.png)
(3)设正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5330adb65f6c8bd64d0cad579ad2910c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca2b0946db9bbcbce5f19507f5c485e.png)
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解题方法
2 . 已知
,
.
(1)求
在
上的最小值;
(2)求曲线
在
处的切线方程
,并证明:
,都有
;
(3)若方程
有两个不相等的实数根
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b6a91900d0dfa6296cdee22fdd6fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea17ec8f211e8be2571fbcce23e04eb8.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23a03ca8f1729bfcadf513784817fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3add1679c27392a1a7f635723a4b36eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
(3)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8013645996eb5766aaf7de48d243d1de.png)
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3 . 若
为
上的非负图像连续的函数,点
将区间
划分为
个长度为
的小区间
.记
,若无穷和的极限
存在
,并称其为区域
的精确面积,记为
.
,则
.求由直线
以及轴所围成封闭图形面积;
(2)若区间
被等分为
个小区间,请推证:
.并由此计算无穷和极限
的值;
(3)求有限项和式
的整数部分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d51566bf604b79196942e1d98681e8c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804319e6cb58f07ee82ee364e334f36b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170a8099f99d594fe2069db5f5b0a797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fc39144ae3149bfe1907c187d16488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6457204e2c22faf40f619d00beb1735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff76c34dfd2435ba35ec29bae174168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7522a05ffe195afcac5524dca7d1cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23c9ae4c388f71a43f091741e0a2fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd120629ba80694f3c127003638921d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a448d3902e8fb6b8d91fbc28867e45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6199ab2ba108562c36d1a2b1bb221a.png)
(2)若区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c589cf775e4342ba056d65523630a3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668c5b6ed1cff3d2da065fde2d54a0f9.png)
(3)求有限项和式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be33f195ef0d3c550dced7eb9d1cf1.png)
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4 . 把正整数1,2,3,…,n按任意顺序排成一行,得到数列
,称数列
为1,2,3,…,n的生成数列.
(1)若
是1,2,3,…,8的生成数列,记
,数列
所有项的和为S,求S所有可能取值的和;
(2)若
是1,2,3,…,10的生成数列,记
,若数列
中的最小项为T.
①证明:
;
②求T的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df0d519bd26388e2ab1934625d89bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d702451d2c4a01591c0cec57f396faf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e0d245d25d34ce73a7d7d8c2587cd6.png)
②求T的最大值.
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5 . 已知函数
.
(1)若过点
可作曲线
两条切线,求
的取值范围;
(2)若
有两个不同极值点
.
①求
的取值范围;
②当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30e674c62fd9e25645b3984827759a6.png)
(1)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e868d1326bf73ac658885d4936bbe04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7913a814e2c4ba5e643af885b6ff0efb.png)
您最近一年使用:0次
2024-06-11更新
|
592次组卷
|
4卷引用:安徽省六安第一中学2024届高三下学期质量检测(三 )数学试卷
名校
6 . 贝塞尔曲线(Be'zier curve)是一种广泛应用于计算机图形学、动画制作、CAD设计以及相关领域的数学曲线.它最早来源于Bernstein多项式.引入多项式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c830f3e22a47c94c357dec1969513.png)
,若
是定义在
上的函数,称
,
为函数
的n次Bernstein多项式.
(1)求
在
上取得最大值时x的值;
(2)当
时,先化简
,再求
的值;
(3)设
,
在
内单调递增,求证:
在
内也单调递增.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c830f3e22a47c94c357dec1969513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7056b06b539a4e7a4c8a0b168d640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b77541e4f695339e55dfb5b378b3c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0453f22559ae9a7f0a23aad438f687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d062966e2ff659f570fed8093546da56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734e14a26f18523ced086599f92c4100.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bea8bf593f594c51fc7cc547482bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0735c9f943fb7abe354bb236e40da88c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faabc45a47f4bd0733a6a85b0cdcac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
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解题方法
7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4426c3b6aa8912905c67d9a26d07083a.png)
(1)若
恒成立,求
的值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4426c3b6aa8912905c67d9a26d07083a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226648ae7c1bc686358268a0cdc12ef4.png)
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8 . 在不大于
的正整数中,所有既不能被2整除也不能被3整除的个数记为
.
(1)求
,
的值;
(2)对于
,
,是否存在m,n,p,使得
?若存在,求出m,n,p的值;若不存在,请说明理由;
(3)记
表示不超过
的最大整数,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc1e9444e6cbbcccfb19bef934fda45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c581f06adc031bd163f98c461300d862.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0f3595c506dd94a3399da87f0b33ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985ea7ad3004613e28dd691829437c11.png)
(2)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5510ef06b326f131933224473550d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf45fc1d20ec9adb3b25794ac938855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80b43936d042aae836465212e716964.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bbe68c798af91a4f5fbf939c4ed315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3651b3fedba1f0e9998fa88acefd08.png)
您最近一年使用:0次
2024-06-07更新
|
469次组卷
|
3卷引用:安徽省A10联盟2024届高三4月质量检测考试数学试题
解题方法
9 . 已知数列
的前n项和为
,若数列
满足:
①数列
为有穷数列;
②数列
为递增数列;
③
,
,
,使得
;
则称数列
具有“和性质”.
(1)已知
,求数列
的通项公式,并判断数列
是否具有“和性质”;(判断是否具有“和性质”时不必说明理由,直接给出结论)
(2)若首项为1的数列
具有“和性质”.
(ⅰ)比较
与
的大小关系,并说明理由;
(ⅱ)若数列
的末项为36,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2ebecf4a0f024b9fcf300196c52493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b0d89736a10c53998013df4a354396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633ae47f41318cce995ee5c6e5db4ff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4a28346a8cfbf7fa850ef66ec18365.png)
则称数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d5fe6e813fbe15a3693fdbec7ac622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若首项为1的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(ⅰ)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121b94d71ab1ccbbce1a3e53bc7d421a.png)
(ⅱ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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
10 . 给定自然数
且
,设
均为正数,
(
为常数),
.如果函数
在区间
上恒有
,则称函数
为凸函数.凸函数
具有性质:
.
(1)判断
,
是否为凸函数,并证明;
(2)设
,证明:
;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0376209b36fa0577a93f281dd68b86f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced4181800832cf83f9dbe8dbeebada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df0dd6144e9a30d1a063b690033c3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9fc6a26f68ea2ec181e18532659ddd.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301a7643aa976ee5b277abfd6b0c26a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047056c99b39c70fa40d3c8178e5b631.png)
(2)设
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(3)求
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