1 . 已知关于
的方程组
的解集中只有一个元素,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f832cad7a010f7a4bc86169be619f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2020-02-05更新
|
386次组卷
|
3卷引用:人教B版(2019) 必修第一册 逆袭之路 第二章 等式与不等式 小结
名校
解题方法
2 . 已知函数
.
(1)当
时,求函数
的零点;
(2)解关于
的不等式
;
(3)当
时,函数
在
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7d90f2a8767e911ebf38d2ab81306f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afff4439d55a888779a2c58482bf2dce.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67b94d9f8dc25106dac1b77ae8181ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30a5498bb0236a2bb04ae38329b408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-11-24更新
|
386次组卷
|
2卷引用:江苏省盐城一中、射阳中学等五校2020-2021学年高一(上)期中数学试题
3 . 已知函数
,其中a,
.
(1)当
,
时,求函数
的零点;
(2)当
时,解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc44bd1224b0f1322ae3b9ed82e70920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cca0ec4b4343a6ccd13b652aea1d00c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc20d351d51723c9b0a07a20ac14114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
您最近一年使用:0次
名校
4 . 有些银行存款按照复利的方式计算利息,即把前一期的利息与本金加在一起作为本金,再计算下一期利息.假设最开始本金为
元.每期利率为
时,在
期后本息和为
.若
,则
.解得
.银行业中经常使用的“70”原则:因为
,而且当
比较小时,
,所以
.若
,
.则
的最小整数值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48263f24da5420576e76038d19c13026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195826ed8beda191693a975a15c0390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151daaebac55f3ba41d51128152778a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078a6028b63c247fd88fb5c67a648093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2c1c43cf0ccab84a155bfb1fd09826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e13df650ac1ff76f302003dfd5bdc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697aa48306bbfd690edfd2d6adf7f453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48263f24da5420576e76038d19c13026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.22 | B.25 | C.23 | D.24 |
您最近一年使用:0次
2020-11-04更新
|
347次组卷
|
4卷引用:湖北省黄冈市麻城一中2019-2020学年高三上学期期末数学(理)试题
5 . 设
,其中常数
,
.
当
时,求不等式
的解;
若函数
的图象关于原点对称,求实数a的值:
当
时,求
在区间
上的最大值与最小值的差.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/430f0bd176993663b80f9f0b7671752e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec5bce37c9f6932972a7dd3d084a3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b93af404ff297a9da73a1412c69fb02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3647b91148807b82a000986cd1d501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaac91d5bb290794e35c8ee1b33818f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c13a09123ae873e0b0501aaecc507e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3647b91148807b82a000986cd1d501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c13a09123ae873e0b0501aaecc507e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35246b1f7e094e6e7ea093f2f53a1a3f.png)
您最近一年使用:0次
6 . 如图是为计算
的函数值所设计的一个程序框图.若关于x的方程
恰有两个不同的解,则实数a的取值范围是( )
![](https://img.xkw.com/dksih/QBM/2020/4/8/2437308749889536/2441539719135233/STEM/e896fdf91b7f43d1b085b47c249ac49a.png?resizew=213)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://img.xkw.com/dksih/QBM/2020/4/8/2437308749889536/2441539719135233/STEM/e896fdf91b7f43d1b085b47c249ac49a.png?resizew=213)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-04-27更新
|
122次组卷
|
2卷引用:重庆市2018-2019学年普通高等学校招生全国统一考试高考模拟调研卷(六)(康德卷))数学(理)试题
12-13高二下·福建·期末
7 . 已知函数
(
是自然对数的底数)的最小值为
.
(Ⅰ)求实数
的值;
(Ⅱ)已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
且
,试解关于
的不等式
;
(Ⅲ)已知
且
.若存在实数
,使得对任意的
,都有
,试求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f99bb4dddda2a37ab2fc93a28222ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405dfcca25b76af059fb4c308983eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(Ⅰ)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba9c3f3c1bb9960b453434e01247bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18faa17bb2b0660e8270727077d9f15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b86c62efa70afadf5e400d1e2e7f100.png)
(Ⅲ)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3527b5463f904e53db1cadb7c643e1d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289bf40b793f86f5e98fa7ab16724a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28322aa44ac94f971e528b81c4fc4089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50012ae45a0559c3c092154625dd325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19e87b33de4c9dacc5f299a256c4d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
19-20高一·浙江·期末
名校
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902cfcb8498acfde6d65c94fb72b4508.png)
(1)当
时,解关于
的不等式
;
(2)若方程
在
上有两个不相等的实数根据,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902cfcb8498acfde6d65c94fb72b4508.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-11-30更新
|
640次组卷
|
5卷引用:【新东方】双师(36)
(已下线)【新东方】双师(36)浙江省“七彩阳光”新高考研究联盟2020-2021学年高一上学期期中联考数学试题(已下线)【新东方】绍兴qw95(已下线)【新东方】在线数学13江苏省南通市如皋市第一中学2020-2021学年高一上学期调研测试3数学试题
12-13高三上·山东德州·期末
9 . 已知函数
是定义在R上的单调函数,满足
,且对任意的实数a有
恒成立.
(Ⅰ)试判断
在R上的单调性,并说明理由.
(Ⅱ)解关于
的不等式
其中m>0.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e1731d0fc638b37d0c9875a70fb4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02bc96e680413dc2dd42a54e2e56201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd421c1a81adf59f3bd0082cbc412f4.png)
(Ⅰ)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e1731d0fc638b37d0c9875a70fb4f3.png)
(Ⅱ)解关于
![](https://img.xkw.com/dksih/QBM/2012/2/9/1570724696055808/1570724701470720/STEM/28c8adbfccff49668909e31ea7d97aca.png?resizew=14)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0c854c7c4f19e1b9afa8ca6ebaca7a.png)
您最近一年使用:0次
名校
解题方法
10 . 已知函数
.
(1)求方程
的解;
(2)若关于
的方程
在
上有实数解,求实数
的取值范围;
(3)若
将区间
划分成2021个小区间,且满足
,使得和式
恒成立,试求出实数
的最小值并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6348f01021ed4f35c802ba6f5337bca1.png)
(1)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515f88ff8fa1cad560307bd2b2e13fcb.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3d8787fe64974039d257b534733289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad814089e37543b2f547af9ae75b6dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39a7d3f20b68fd9a9df5c8047887371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dced5113d82c9e18842e3b190a13d73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54aae75c4a164302db6abdfbf4dc362a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2022-01-12更新
|
288次组卷
|
3卷引用:沪教版(2020) 一轮复习 堂堂清 第二单元 2.10 指数方程与对数方程