名校
解题方法
1 . 已知集合
,其中
且
,若对任意的
,都有
,则称集合
具有性质
.
(1)集合
具有性质
,求
的最小值;
(2)已知
具有性质
,求证:
;
(3)已知
具有性质
,求集合
中元素个数的最大值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd70e76e1780a839fcbff88cd71c2fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac10f1abfec87624afd60003af4eaddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5269913f25626c9615a0851c59c20d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2aa8c7598aa438022d7ff0db9a3de7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e86a882ef57f44f0ad22836079afe1.png)
(1)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f65336695f80a1fe2a7838a3ae17c51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32efe4eff75508cb93e828c735dcb695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353433462b58fe2eba495f2589b81380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2be2cef8c6e56b2381acca7f3c0cf4.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353433462b58fe2eba495f2589b81380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2023-10-12更新
|
1776次组卷
|
5卷引用:黄金卷03
2 . 设
,数列
满足
,
.
(1)若
,
,证明
是等比数列,并求
的通项公式;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8478b1b71727ba01b2d4e6ebac133c34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f31f755edadf66af8cc1f9f8aeda2ec.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114dc083c6f736f7d6601e1b5ba27c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8da5f71a9e9eb7d9c4b84de3ccf15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1458e2d74ec7c75966ff4a772f2891a6.png)
您最近一年使用:0次
名校
3 . 设A是由
个实数组成的2行n列的矩阵,满足:每个数的绝对值不大于1,且所有数的和为零.记
为所有这样的矩阵构成的集合.记
为A的第一行各数之和,
为A的第二行各数之和,
为A的第i列各数之和
.记
为
、
、
、
、…、
中的最小值.
(1)若矩阵
,求
;
(2)对所有的矩阵
,求
的最大值;
(3)给定
,对所有的矩阵
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd9dbdea32a8f7b9fd4c8982eef6dea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fc1924d5c54d4f2824f6accc1238b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b68fd1ac04715b65105c0cf40aa84f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a2629e9e3b3fcf0c0bdd49c76b95cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a954ad5b391cfc9440f0444cbbfa889d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f128d1af43d66e8048295604ef89046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ba5c6f604da3afa5c18d368fb12060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30773f6541752c8d133db5662ccee553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d137142642163af066957fe19218ed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260bcd4709ef67852ef6e2de9841e75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af2bb6f225862039961601a07e7d7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9624751c77e7b93a0166bbdc302cdc6.png)
(1)若矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63da318b4a47902b2a7979230e997e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ba5c6f604da3afa5c18d368fb12060.png)
(2)对所有的矩阵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b432f6219d00bd0b2bc483401b9dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ba5c6f604da3afa5c18d368fb12060.png)
(3)给定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18969d9db906a0f002b762113ecf077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01aef0b7f72cd41492cade2785ccc6cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ba5c6f604da3afa5c18d368fb12060.png)
您最近一年使用:0次
2022-05-28更新
|
452次组卷
|
3卷引用:北京市第 八十中学2022-2023学年高二上学期期中考试数学试题
解题方法
4 . 已知M是满足下列性质的所有函数
组成的集合:对任何
(其中
为函数
的定义域),均有
成立.
(1)已知函数
,判断
与集合M的关系,并说明理由;
(2)是否存在实数a,使得
属于集合M?若存在,求a的取值范围,若不存在,请说明理由;
(3)对于实数
,用
表示集合M中定义域为区间
的函数的集合,定义:已知
是定义在
上的函数,如果存在常数
,对区间
的任意划分:
,和式
恒成立,则称
为
上的“绝对差有界函数”,其中常数T称为
的“绝对差上界”,T的最小值称为
的“绝对差上确界”,符号
.求证:集合
中的函数
是“绝对差有界函数”,并求
的“绝对差上确界”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03e6ac25d3f66b036bee546b28296e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5886cf72ed5a1073263eb9ff485c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977a7e54c62dc0953cb298dabbf4860a.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e259b881edb5c3689559ea363488f9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)是否存在实数a,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e5ea5fddf06ac678b1aed55349999e.png)
(3)对于实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa38149578f22f9e1e2bd481dade72de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79775b36e40e07114c57a801e713398d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094f977194228bed828f3507f5898934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682de988a497e81d10d70f8740f73a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92cbcd6191ec6ebf0020943f65d88f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d434e054594e2a29b97888f716c63f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f7b099591432a0a71180d1a3141de58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
您最近一年使用:0次
5 . 数列
的各项均为整数,满足:
,且
,其中
.
(1)若
,写出所有满足条件的数列
;
(2)求
的值;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c443dd1ce0f02cae28a35d69816031a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae17052168f340cb0757dc1ec0959489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65560724cdbf1a53160359333bba73b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9efeb4455e30293d412938eeea85d5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2309691b0e1b023bcb8d485cce6f1721.png)
您最近一年使用:0次
2020-03-12更新
|
424次组卷
|
2卷引用:2019届北京市一零一中学高三下学期月考(三)数学(理)试题
解题方法
6 . 在数列
中,若
(
,
,
为常数),则称
为“平方等差数列”.
(Ⅰ)若数列
是“平方等差数列”,
,写出
的值;
(Ⅱ)如果一个公比为
的等比数列为“平方等差数列”,求证:
;
(Ⅲ)若一个“平方等差数列”
满足
,设数列
的前
项和为
.是否存在正整数
,使不等式
对一切
都成立?若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcca101c64c174f1fcb326ca1e1ff93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b0d8ecf4955dfcb76ca3e896568b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8c29b297e3ec337c3139c2a1ebed1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
(Ⅰ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2448cf72af76b810310e4cfb9818e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f71f23b95dfda565fcb6e9d4e27b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d03592135fc636d2a4ee12b02b3e172.png)
(Ⅱ)如果一个公比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f6eb38c755ee7526f0cb5d7c911c83.png)
(Ⅲ)若一个“平方等差数列”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a426d8afd49a1ce1e8dddd2ea37498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9039db92df2a887c434e4535f5ebdc8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8071a075180edb12213ec79d3de00cbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb26cd1601fe7e76e1e2dc0b4909324a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0df1071048082a12a808bd608848fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1561813bf940dd153981cb3f98684f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8c29b297e3ec337c3139c2a1ebed1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0df1071048082a12a808bd608848fa.png)
您最近一年使用:0次
7 . 已知函数
的定义域为(0,+
),若
在(0,+
)上为增函数,则称
为“一阶比增函数”;若
在(0,+
)上为增函数,则称
为”二阶比增函数”.我们把所有“一阶比增函数”组成的集合记为
1,所有“二阶比增函数”组成的集合记为
2.
(1)已知函数
,若
∈
1,求实数
的取值范围,并证明你的结论;
(2)已知0<a<b<c,
∈
1且
的部分函数值由下表给出:
求证:
;
(3)定义集合
,且存在常数k,使得任取x∈(0,+
),
<k},请问:是否存在常数M,使得任意的
∈
,任意的x∈(0,+
),有
<M成立?若存在,求出M的最小值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e82cc461b9607e08a8b31597f6d26df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b581dba9cddfa758eb3a030fcc9de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843a1dd73fb90053eeb8f5d014f9c0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)已知0<a<b<c,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![]() | ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | t | 4 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0804b72b083963cfb022c1d3d45e758.png)
(3)定义集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951068950ea1e02576e11df1d43de9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f5817ab7b88e9d8a83dd086ffdb3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a27e72b96bc7af66c7472a9d7370e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
8 . 现有一组互不相同且从小到大排列的数据:
,其中
.为提取反映数据间差异程度的某种指标,今对其进行如下加工:
记
,作函数
,使其图象为逐点依次连接点
的折线.
(1)求
和
的值;
(2)设
的斜率为
,判断
的大小关系;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fb4cf459841e547e2d358d392abc0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c8d0474f7d81ef8dbefaacfd5afe7c.png)
记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184ab0d79c05f5ca0254518f669090bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39122971f02da2ac15fff63e55458178.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54b6a060d6c51a328341df76013bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74156327e5659301f391814605688899.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202f3247f015783652c3b80fb5759f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef9ee0b2b2282c2be75fa875fac18fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90515707a364861cc94ebb7b0d9c5a15.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe872a9bad3fc80fcfa5a10cbcd3e89.png)
您最近一年使用:0次
名校
解题方法
9 . 已知数列
的前
项和为
,且满足
,
.设
.
(1)求
的通项公式;
(2)猜测
与
的大小关系并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d1e3f64e8d2589e61a54c3753bb269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb26afa639659d1cf754acc5c8e9269.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)猜测
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
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