1 . 设数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ed16bc1ac15e077c44956797fa3de1.png)
______ .
![](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/ec6c104370c988cd818839b21f32829a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ed16bc1ac15e077c44956797fa3de1.png)
您最近一年使用:0次
2020-04-15更新
|
570次组卷
|
2卷引用:重庆市2019-2020学年普通高等学校招生全国统一考试高考模拟调研卷(三)(康德卷)数学(理)试题
2 . 执行如图所示的程序框图,输出的结果为
![](https://img.xkw.com/dksih/QBM/2020/4/14/2441511439794176/2441851635408896/STEM/1e430d996d19425384adaf273aa6b727.png?resizew=300)
![](https://img.xkw.com/dksih/QBM/2020/4/14/2441511439794176/2441851635408896/STEM/1e430d996d19425384adaf273aa6b727.png?resizew=300)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知
中,角
、
、
的对边分别为
、
、
,且
,
.
(1)求角
的大小;
(2)若
,点
在边
上,且
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab80053aa94ee1c14fe4c72a21adf3dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000a4d58dc4ce801345391e223adba27.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4037561c629fd07503c6803e1eb62fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b6bef27de230acad352f25e954f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a88091c5ea8f7608741607386e6463.png)
您最近一年使用:0次
2020-04-11更新
|
713次组卷
|
3卷引用:重庆市第八中学2021-2022学年高二上学期第一次月考数学试题
名校
4 . 已知满足
,
,
的
恰有一个,那么
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/784d4027e4a05d3e1988aeccadd28133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df81cda12d7601d58b1d9c7c180c4d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2020-04-08更新
|
624次组卷
|
2卷引用:重庆市黔江新华中学校2019-2020学年高一下学期期中数学试题
5 . 已知数列
满足
,数列
的前
项的和为
.
(1)求出数列
,
的通项公式;
(2)若
,求数列
的前
项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925f52e9e8f9143a737f9d9edfc72325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4300dca231e2f4b37f70900b33439d5e.png)
(1)求出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dbf1440607fd79c69dee5f5a90e6ea4.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2020-04-07更新
|
686次组卷
|
3卷引用:重庆市松树桥中学2019-2020学年高三下学期第二次月考数学(文)试题
名校
解题方法
6 . 已知
满足约束条件
,且
的最大值为1,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252ca4fd0c08c7e3bd3ac1c371fe718a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef585486cab9ba889ec0f06596254e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
您最近一年使用:0次
2020-04-07更新
|
302次组卷
|
2卷引用:重庆市松树桥中学2019-2020学年高三下学期第二次月考数学(文)试题
名校
解题方法
7 . 在等差数列
、等比数列
中,
,
,其中
.
(1)求数列
的公差
和数列
的公比
;
(2)数列
满足
,求数列
的前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebaf2a2590bb84d646957f913d78f6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52426a11d9064125a388852582577013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5025625b3176d426657d6f7f46bc3.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ccadce32382d4c0c01a136c75b57d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
8 . 变量
、
满足约束条件
,若目标函数
(其中
)仅在
处取得最大值,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363cb36a22fc7072d76bc766e2976282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baaa79c2c101deb8595d3b296ad2b73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
真题
9 . 如图
是一块半径为1的半圆形纸板,在
的左下端剪去一个半径为
的半圆后得到图形
,然后依次剪去一个更小半圆(其直径为前一个被剪掉半圆的半径)得圆形
、
、……、
…,记纸板
的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6eb2fcf76cd58f6573a059ab1ab48b4.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee50575e3ebd56c4f46dd0bbf8e55d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6eb2fcf76cd58f6573a059ab1ab48b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/b05ced92-347b-4c8b-aa65-53d9aefff994.png?resizew=398)
您最近一年使用:0次
2020-03-07更新
|
214次组卷
|
3卷引用:2004 年普通高等学校招生考试数学(理)试题(重庆卷)
名校
10 . 如图,四边形
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/aa3ceba9-5f8c-4f3c-b3b5-3a56ef57229e.png?resizew=146)
(1)若
,求
.
(2)若
,求
长度的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e3fa43e765646223675ef9bbd6d2f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86645030b883ec997ebf7a3b8d848eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/aa3ceba9-5f8c-4f3c-b3b5-3a56ef57229e.png?resizew=146)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b183cb878f2ceedad8d780514dcc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58195e8ee6f342c1641d9e88ff986f56.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
您最近一年使用:0次
2020-02-27更新
|
1262次组卷
|
7卷引用:重庆市西南大学附中2018-2019学年高一下学期期中数学试题