名校
1 . 已知函数
.
(1)当
,
时,若存在
,
,使得
,求实数c的取值范围;
(2)若二次函数
对一切
恒有
成立,且
,求
)的值;
(3)是否存在一个二次函数
,使得对任意正整数k,当
时,都有
成立,请给出结论,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3707087983ba2413c0e3a61b45bda0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2358f5911651e05bd0e0e1efba3295.png)
(2)若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89686864c59e499924d70df368ff0436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be48f62305ae1af763e6a6cc09d202e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a1838c3ca6a8cb95370fd97ebdae8e.png)
(3)是否存在一个二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d464cc3dd62898cd79f3c243813afe21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d09f339ad8e947cc4fd2cc5829b66d.png)
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2020-12-01更新
|
345次组卷
|
6卷引用:上海市上海师范大学附属中学2021届高三上学期期中数学试题
上海市上海师范大学附属中学2021届高三上学期期中数学试题(已下线)第05讲 各类基本函数 - 1(已下线)专题4.5 数学归纳法(B卷提升篇)-2020-2021学年高二数学选择性必修第二册同步单元AB卷(新教材人教A版,浙江专用)(已下线)4.4 数学归纳法-2021-2022学年高二数学链接教材精准变式练(苏教版2019选择性必修第一册)(已下线)第04讲 数学归纳法(核心考点讲与练)-2021-2022学年高二数学考试满分全攻略(人教A版2019选修第二册+第三册)(已下线)4.4 数学归纳法(分层作业)-【上好课】2022-2023学年高二数学同步备课系列(人教A版2019选择性必修第二册)
2 . 已知二次函数
满足
,
,
,
.
(1)求
的解析式;
(2)求证:
时,
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4090560bb61e7728d9a0ae530e86cbd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/492269c463a2dd4cde7abbaac3e4a64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46305fedfb17a208a8b4cab7ebceddfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2150b0c0926d641eefb3a84716190eb4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16600d1f237ab3692764bb9fa6d83874.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae949345f4c432c3046a632f08bc60eb.png)
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名校
解题方法
3 . 设二次函数
.
(1)若
,且
在
上的最大值为
,求函数
的解析式;
(2)若对任意的实数b,都存在实数
,使得不等式
成立,求实数c的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a97bb7f8a9c4e3254131e70817100ab.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e08a3f834adfcc5ea32423c2fb1e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1924f683f9c883587b48ccddd8f00f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df827a781dc610975e0769c020d0e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若对任意的实数b,都存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3cb9c12ef792e9ca72446ec0c24f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b20560bad7ef2927604034b3b0499421.png)
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2022-01-12更新
|
1040次组卷
|
10卷引用:2015年6月浙江省普通高中学业水平模拟测试数学试卷
2015年6月浙江省普通高中学业水平模拟测试数学试卷浙江省金华市义乌市2019-2020学年高一下学期期末数学试题(已下线)模块三 专题1 不等式恒成立、能成立问题(已下线)重难点02 一元二次不等式恒成立、能成立问题【六大题型】(已下线)【新东方】高中数学20210527-001【2021】【高二下】(已下线)第3章 函数概念与性质(巩固篇)-2021-2022学年高一数学单元过关卷(人教A版2019必修第一册)浙江省杭州学军中学西溪校区2022-2023学年高一上学期期中数学试题(已下线)高中数学-高一上-58广东省阳江市2021-2022学年高二上学期期末数学试题(已下线)专题05 二次函数与一元二次不等式压轴题-【常考压轴题】
4 . 已知二次函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea89fb796dea0e3e7571530eaee85bbc.png)
,满足
,且在区间
上的最大值为
,若函数
有唯一零点,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea89fb796dea0e3e7571530eaee85bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b92db837661bd16bd1b01f88f91f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ea832b11f5a84b9bf3020271480631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9988f7a5f8f8b73553686a813a9d405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae625076c0fa5d9b0adbb2ebb8ec0ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2020-12-14更新
|
1017次组卷
|
3卷引用:2018年天津市普通高中学业水平考试数学试题
名校
5 . 已知值域为区间[-1,+∞)的二次函数f(x)满足f(-1+x)=f(-1-x),且方程f(x)=0的两个实根x1,x2满足|x1-x2|=2.
(1)求f(x)的表达式;
(2)函数g(x)=f(x)-kx在区间[-1,2]上的最大值为g(2),最小值为g(-1),求实数k的取值范围;
(3)设函数h(x)=2af(x)+2(b-2a)x,若对任意不为零的实数a,b,总存在实数x0∈(0,t),使h(x0)=a+b,求实数t的取值范围.
(1)求f(x)的表达式;
(2)函数g(x)=f(x)-kx在区间[-1,2]上的最大值为g(2),最小值为g(-1),求实数k的取值范围;
(3)设函数h(x)=2af(x)+2(b-2a)x,若对任意不为零的实数a,b,总存在实数x0∈(0,t),使h(x0)=a+b,求实数t的取值范围.
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2019高一·浙江·专题练习
名校
6 . 设二次函数
满足我们的:
①当
时,
的最大值为0,且
成立;
②二次函数
的图象与直线
交于
两点,且
.
(1)求
的解析式;
(2)求最小的实数
,使得存在实数
,只要当
时,就有
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a366c0f71a78d82f50ac7eee9b8af4.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e9a9ad236288e670ea7d944cf44e87.png)
②二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd24f3c4bc9f9a75d4b28630bb630d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dfc9d1109fe41145cc892b5702d9fb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求最小的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007236065c3e14af7e41b314f850bf8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164cca5e390359a6a21fbc495dc521bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fd48e9eda4f01dfcc017d19c8cc997.png)
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2020-01-06更新
|
687次组卷
|
3卷引用:【新东方】2019新中心五地014高中数学
名校
7 . 已知函数
,且
,对任意实数
,
成立.
(1)求函数
的解析式;
(2)若
,解关于
的不等式
;
(3)求最大的
使得存在
,只需
,就有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1915a1c8f18b3f42ce08d8f82af90708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431537df789febf4bc45e3dc23cefaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/647ffc3291900b80c4c5460e49747c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffae95897e0ee93723b9ce43f6fa8dd.png)
(3)求最大的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee74315c62da704465b46d9baaf26c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2425497f56c3bdc9a8d7cde18e41d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfc7d3c0bbc528e156df4d81c68cd7a.png)
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2019高三·全国·专题练习
8 . 已知二次函数
的图象与
轴交于点
,图象关于
对称,且
.
(1)求
的解析式;
(2)若函数
为奇函数,求
的值;
(3)是否存在实数
,使
的定义域与值域分别是
,若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80572ee260861ef2fda0a7f631b8a716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fc49d7aa36586488acf96ccdd0bbd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8279140f3a6eb1e7171e524403c07876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c1821f226783152f1f7ba2cd73676a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d408a5e7feb412def83481236961b963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b0433240f028dbcbd09a26e3f42132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b178e5a926014a2854103b204f52fa41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea0595c0c301a43c854a5dd1c548441.png)
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名校
9 . 已知函数
(
,
).
(1)若函数
的图象与直线
均无公共点,求证:
;
(2)若
,
时,对于给定的负数
,有一个最大的正数
,使
时,都有
,求
为何值时
最大?并求
的最大值;
(3)若
,且
,又
时,恒有
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce086037087f58409a28b4885979fd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e9d1ad9561d693958756ee8398218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3051f43ac48c0a730a791b8a93ad37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abffa1d225ca1e8bd2d15ab6d3ad9a50.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9439d9d9bc4f93dce4b94d1e33e06bec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760f804646698060703c5458ff5637c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044934f7dbd6847a30f13a34c9bb4e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efdb19e1863e40b863519bca9edcdf33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760f804646698060703c5458ff5637c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760f804646698060703c5458ff5637c7.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77cdb8806a697e8e5480fad9c380baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fdf1eec5487c094e8d38cbc77b91604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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名校
10 . 已知函数
的图像过点
,且对任意的
都有不等式
成立.若函数
有三个不同的零点,则实数
的取值范围是__________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a35277c37144276ead40bb74a51481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1557cec64ffb037fb124dc278289fa10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064be53d3238d39957f13e10fabc392d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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