解题方法
1 . 一学生解方程
,经过
换元变形后得到
,为求解方程,他判断出方程无有理根.利用二分法,发现两个零点
满足
,他决定追踪之并分解因式,得到下表.
则下列实数中,关于x的方程的解为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e35b4867331007ef3a99c8f70dd253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7d742e1206acd2584184528a21e99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f4bed01737f952037308d17a4243ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8e9f49a0c2862c0672ff6e12454be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cea65015d5c56a26b0fdd77f6359fd1.png)
t | 0 | 1 | 0.5 | 0.75 | 0.625 | 0.562 | 0.593 | 0.609 | 0.617 | 0.621 | 0.619 | 0.618 |
9 | 1.613 | 0.060 | 0.025 | 0.008 |
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知函数
,
.
(1)当
时,解不等式
;
(2)关于
的方程
在区间
内恰有一解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eaeb2ab68a49074d623ffca072fed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f838df16fb3a8857c3afd1a8804508d9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00178d65edd157208a60c58d6d0e0ce4.png)
(2)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8f5d170d852aaa8ecc3ae6d49d4f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0e705301752424a492f6277ed7774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知函数
.
(1)设
是
的反函数.当
时,解不等式
;
(2)若关于
的方程
的解集中恰好有一个元素,求实数
的值;
(3)设
,若对任意
,函数
在区间
上的最大值与最小值的差不超过
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e4900f308f9aba73d06964d8e61f54.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab05c7c140f76ce8618a6694b57b30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6bd20834857c93040879c02070035b6.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b542881ccda4af9d4cbc1df4ead2638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb848c2e3353bcb126d14fed803fe2a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaca9c1dac608a386df1848e8459ce9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e24d42f61784c642e9eb1316afdd2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-02-01更新
|
270次组卷
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2卷引用:上海市杨浦区2018届高三上学期期中数学试题
4 . 正整数
、
满足
,若关于
、
的方程组
有且只有一组解,则
的最大值为_____ .
![](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/63478e7cf55bad51bbd4ce1e23363e75.png)
![](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/3a94f27a946a256e802ab135502b5960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-02-03更新
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3卷引用:2016届上海市高考压轴数学试题
5 . 正整数a、b满足1<a<b,若关于x、y的方程组
且只有一组解,则a的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62d7cc776503fe56e52111eb1072ae0.png)
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20-21高一·全国·期末
6 . 设函数
.
(1)当
时,解不等式
;
(2)若
,且关于
的方程
在[-2,6]上有实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2bb471ea23a11f0e286d5c0057bd5f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ee2e21d12a5824a3eb55158f0b0232.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42dc22436b2a4edf3d6e15e1e5a15343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29f26e8c16ddffa2df94bb753267ede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2021-09-08更新
|
473次组卷
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7卷引用:期末复习【真题训练】-2020-2021学年高一数学单元复习(沪教版2020必修第一册)
(已下线)期末复习【真题训练】-2020-2021学年高一数学单元复习(沪教版2020必修第一册)江苏省无锡第六高级中学2022届高三10月质量调研数学试题(已下线)第07节 函数的图象与方程(好题帮)-备战2023年高考数学一轮复习考点帮(全国通用)第四章 幂函数、指数函数与对数函数【真题训练】-2020-2021学年高一数学单元复习(沪教版2020必修第一册)第八章 函数应用(选拔卷)-【单元测试】2021-2022学年高一数学尖子生选拔卷(苏教版2019必修第一册)(已下线)4.5函数的应用(二)-2021-2022学年高一数学同步辅导讲义与检测(人教A版2019必修第一册)(已下线)期末综合检测一-2021-2022学年高一数学同步单元AB卷(人教A版2019必修第一册)
7 . 已知
(
).
(1)解关于
的不等式
;
(2)若
有两个零点
,
,求
的值;
(3)当
时,
的最大值为
,最小值为
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda2912a717222e02a3bb0bf11d1bb88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ef9f9f0a79e61a30f7da782cbb2fab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5f18a08ed6cf92b894ea722af72862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 设
且
,
,已知函数
.
(1)当
时,求不等式
的解;
(2)若函数
在区间
上有零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086244b1b7904e6d967a8c0daa826f57.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d86b4ad722d7b720603eba9d330fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2203b1906da60b21c8b7bd27aa8f209c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040d7a53373b15ed20cb8bce3996399f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
9 . 已知
,函数
.
(1)求实数
的值,使得
为奇函数;
(2)若关于
的方程
有两个不同实数解,求
的取值范围;
(3)若关于
的不等式
对任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5de13c387dd5d2aa9200d96341c3823.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20285270c0987114efde60742da21494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e64b91e07b412d77b3341ec7255e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389c5eb9278242f235dfcb45e687f7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-01-30更新
|
457次组卷
|
4卷引用:上海市复旦大学附中2018届高三上学期10月月考数学试题
上海市复旦大学附中2018届高三上学期10月月考数学试题上海市复旦大学附属中学2018届高三上学期第一次综合测试数学试题上海市复旦大学附属中学2018 届高三上学期第一次月考数学试题(已下线)第6章+幂函数、指数函数和对数函数(重点卷)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第一册)
10 . 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.![]() |
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2020-04-27更新
|
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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