解答题-问答题
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适中(0.65)
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1 . (2011年苏州20)已知二次函数
对于任意的实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff60eab72de85437e12806474281612.png)
,
都有
成立,且
为偶函数.
(1)证明:实数
>0;
(2)求实数a与b之间的关系;
(3)定义区间
的长度为
,问是否存在常数
,使得函数
在区间
的值域为
,且
的长度为
?若存在,求出a的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/811986d3ad64d6919ee64b1367577b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff60eab72de85437e12806474281612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f3560f0c5eedffa5ce38fde2db28c3.png)
都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c337371338c0661b46fa8d0467fdfa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25990e1d373ac30d7480633e47cc1ef.png)
(1)证明:实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求实数a与b之间的关系;
(3)定义区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d796cc708c99b7415397b8c93b1cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72131c00caddb160678989ce9c0f4b38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5b21aa3df433d6b78b76b36e21adcc.png)
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2 . 定义在
上的函数
及二次函数
满足:
,
且
.
(1)求
和
的解析式;
(2)对于
、
,恒有
成立,求实数
的取值范围;
(3)设
,讨论关于
的方程
的实数解的个数情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d16ba3cac95dd2d33cc9c67c92a40f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e287518f5a501668635cb8fcc3ba26d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ba020cec39f85f5d2ad105fc4d5e66.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(2)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba2883b1ab5cebcc3c5e181361279e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7b6a495b074c21073d2d8fed7b8f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2acd3528416e6f832180ec730df3a71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1b564d9a0960b3b9c5d2f51e8ad5de.png)
您最近一年使用:0次
解题方法
3 . 已知函数
满足
,且
,令
.
(1)求函数
的表达式;
(2)求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6559ea6d273471f6fee7f72ae91939c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db92ae4746a34821d8c5b1cce16486b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138678ca788fa48f52c231cc553e99db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b490f3f4785d81d184b7aec776ab1d2.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
您最近一年使用:0次
13-14高一上·河南周口·阶段练习
名校
4 . 已知函数
(其中a,b为常数,且
,
)的图象经过点
,
.
(1)求
的解析式;
(2)若不等式
在
时恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d6c95ea3b9d0ff3e90a702d2db77d8.png)
![](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/440b61cd452731d6879f439977b87944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1303a69b5f39d8e6b798d4ce33971611.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3ac52f7a60cbba7e65325e602bd5e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16534214250c59605aae906eef0094c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2016-12-02更新
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1428次组卷
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8卷引用:2013-2014学年河南周口市中英文学校高一上学期第三次月考数学试卷
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11-12高二下·河南洛阳·阶段练习
解题方法
5 . 已知
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6266a5b47e313651b98ca48c91a754fc.png)
(1)求函数
的表达式;
(2)已知函数
的项满足
,试求
;
(3)猜想
的通项;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf2ebb3e8b78d362e6ba0e648dd1374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224bba4cbbc54c9cda687a2db394abb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6266a5b47e313651b98ca48c91a754fc.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db87ffceab6741bf496f69449cc728d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a64b689ca857e0a791bab4d2a02d6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
(3)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db87ffceab6741bf496f69449cc728d.png)
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10-11高一·甘肃天水·开学考试
解题方法
6 . 若
是一次函数,
且,则
= ________________
![](https://img.xkw.com/dksih/QBM/2011/9/2/1570301697966080/1570301702873088/STEM/c4881fab6df7403b83945ac70b9a0e07.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2011/9/2/1570301697966080/1570301702873088/STEM/b084e9f31556481a809bd89cff38c6aa.png?resizew=109)
![](https://img.xkw.com/dksih/QBM/2011/9/2/1570301697966080/1570301702873088/STEM/c4881fab6df7403b83945ac70b9a0e07.png?resizew=36)
您最近一年使用:0次