解题方法
1 . 方程
有三个互不相等的实根,这三个实根适当排列后可构成一个等比数列,也可构成一个等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
______ ,该方程的解集为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c8f4e44e0f69911361b52d467849a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
名校
解题方法
2 . 下列说法中正确的是( )
A.在![]() ![]() ![]() |
B.已知向量![]() ![]() ![]() ![]() |
C.![]() |
D.若平面向量![]() ![]() ![]() |
您最近一年使用:0次
2024-05-06更新
|
347次组卷
|
3卷引用:四川省阆中中学校2023-2024学年高一下学期4月期中学习质量检测数学试题
四川省阆中中学校2023-2024学年高一下学期4月期中学习质量检测数学试题(已下线)模块五 专题1 全真基础模拟1(苏教版期中研习高一)四川省阆中中学校2023-2024学年高一下学期期中考试数学试题
名校
3 . 为了研究小滑块在平面上的运动,测量得到如下一组数据:
这组数据的线性回归方程经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
时间(s) | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
位移(cm) | 1.8 | 3.6 | 5.3 | 7.1 | 8.8 | 10.4 | 12.0 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66719ea061a3dd5dd8cfe5d600887089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
解题方法
4 . 若实数列
满足
,有
,称数列
为“
数列”.
(1)判断
是否为“
数列”,并说明理由;
(2)若数列
为“
数列”,证明:对于任意正整数
,且
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce97bb4c969108ebef4ebadd5acc5ca4.png)
(3)已知数列
为“
数列”,且
.令
,其中
表示
中的较大者.证明:
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fee3639b8e3ff9717f3ffd9633927f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8414472e2121e1796eb40408d820053a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f1bc95528c774ce919f7c5a0ef0d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d7e68d0c8bd9a32d826c721ab74d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e517c32ed93de4d9cb6e0926337000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce97bb4c969108ebef4ebadd5acc5ca4.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93846b72089bd425864969f2edabdb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8957564d30af14db69fdc36be2eaee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065f8a641aab5c39f73be89a6f2e7a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4dc7e8bd20e9d38b4d248a8c253ccd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e8131eb05d480f0da6c61ebda3ce48.png)
您最近一年使用:0次
5 . 已知数列
,则它的第8项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f2564ee88b0c3a87482223c317417f0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
6 . 对于有穷数列
,若存在等差数列
,使得
,则称数列
是一个长为
的“弱等差数列”.
(1)证明:数列
是“弱等差数列”;
(2)设函数
,
在
内的全部极值点按从小到大的顺序排列为
,证明:
是“弱等差数列”;
(3)证明:存在长为2024的“弱等差数列”
,且
是等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce381e1cb026a858d8c7b94e1754844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43a56a30994f7d7e2f15da593b05a56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a56586686dfb815fe548957ddcfefb.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1947fd8b1e5fa9096c13256fdb3a23ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7833e32ccdb51745b01fc7877762492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20655342f9ace8b50a50f5eae6f37beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20655342f9ace8b50a50f5eae6f37beb.png)
(3)证明:存在长为2024的“弱等差数列”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
7 . 风筝起源于春秋时期,是中国传统手工艺的代表,被称为人类最早的飞行器.如图所示,在一个简易风筝面的示意图中,AC垂直平分BD,E为垂足,
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/25/53c00987-17dc-4b7a-9143-e9ab844bc0bd.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47fb4f0dbd619fecc5d69a8f44c2ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc011d6e24d4edf9920f58a0a510bbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6e8fb343d289461c07922963f849a9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/25/53c00987-17dc-4b7a-9143-e9ab844bc0bd.png?resizew=138)
A.8 | B.![]() | C.![]() | D.-8 |
您最近一年使用:0次
2024-05-04更新
|
330次组卷
|
3卷引用:模块四 专题4 重组综合练(安徽)
8 . 若
,则称
为
维空间向量集,
为零向量,对于
,任意
,定义:
①数乘运算:
;
②加法运算:
;
③数量积运算:
;
④向量的模:
,
对于
中一组向量
,若存在一组不同时为零的实数
使得
,则称这组向量线性相关,否则称为线性无关,
(1)对于
,判断下列各组向量是否线性相关:
①
;
②
;
(2)已知
线性无关,试判断
是否线性相关,并说明理由;
(3)证明:对于
中的任意两个元素
,均有
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d935457799f234e86a59e2f662d5ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00d8f90655e6341907aa9c7c62d4398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554f144d15fc567b25935b38917430c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aff8d9b6533ff319420cdc5e8740b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1156e087d0c92bf15ea7a53d021fcc.png)
①数乘运算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ee3d2d5f39d4050799537d5ad6bb375.png)
②加法运算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374036b2d97be3bb771c6d1bfd2ae6eb.png)
③数量积运算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3760d1b114cab294d2b8af405de49814.png)
④向量的模:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e7f7030526d65d5fff785d0d35a6ba.png)
对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00d8f90655e6341907aa9c7c62d4398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab882b48940b6e1a185a513a0d8e8d97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3e3f607c7d170c8a9e614bfd2cb5f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946f81ae87f9c8cdc1017af6c1ec2fb2.png)
(1)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56eb5f6747ea94d1075210265214211.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6432103414cd0efd40a0c0017eb11b.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf1bee58a691b31e06e088afed4c25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76eb5fb9c09b830eecb5ba7efea4e09.png)
(3)证明:对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00d8f90655e6341907aa9c7c62d4398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c21920a0a39b1604e130601f061b056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1120f6ff618146c9851df5dea05c1f55.png)
您最近一年使用:0次
解题方法
9 . 如图,
是矩形
所在平面外一点,
,二面角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
为
,
为
中点,
为
中点,
为
中点.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b9239263f68a3c495a2b443fcedf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f35abf35a6045f10dd7f681fea6fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
名校
10 . 光源
经过平面
反射后经过
,则反射点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484526eee28b263cd0045435e1531f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e4aaecb821e7f5d405a03b97616856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88afbdd15462200c870472afc0b11abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次