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解题方法
1 . 已知
,
.
(1)若函数
在
为增函数,求实数
的值;
(2)若函数
为偶函数,对于任意
,任意
,使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482de0ec9b7785722b984bb24cb1ac97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acd45ea1db83ed38b951daf2ccde56d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b029e85e686623cdef977b2cb1f207a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3306b0d881e80bc9d0ac85d4a736b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ba8542fbe02e78cf3948c9abea9855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2f3f41ca28e9b91f24579f7d5680a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-03-03更新
|
2682次组卷
|
8卷引用:四川省棠湖中学2020-2021学年高二上学期开学考试数学(理)试题
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2 . 定义在
上的函数
,如果满足:对任意
,存在常数
,都有
成立,则称
是
上的有界函数,其中
称为函数
的一个上界,已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13229382b2a6a271f08449390faae00f.png)
(1)若函数
为奇函数,求实数
的值;
(2)在(1)的条件下,求函数
在区间
上的所有上界构成的集合;
(3)若函数
在
上是以2为上界的有界函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791e0a33ac5593e2ac213d1220595c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea232de27d21a2646fd4520ea0726bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf336fbcc7512bd5bcf3c2a924b0e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13229382b2a6a271f08449390faae00f.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在(1)的条件下,求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b5b0fbfa6d2b440511063f5d266233.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-07-24更新
|
512次组卷
|
3卷引用:四川省宜宾市叙州区第二中学校2023-2024学年高二上学期开学数学试题
四川省宜宾市叙州区第二中学校2023-2024学年高二上学期开学数学试题重庆市杨家坪中学2022-2023学年高一上学期期末数学试题(已下线)模块二 专题1《对数函数及其应用》单元检测篇 B提升卷 (人教A)
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3 . 已知函数
(
且
,
)的图像经过
,
.
(1)求函数的解析式;
(2)若对任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74072b76f07172b4f42c7a945f215810.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/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440b61cd452731d6879f439977b87944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1303a69b5f39d8e6b798d4ce33971611.png)
(1)求函数的解析式;
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17260a6fd0a67fd669414cf8d5dbea55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c93278c45ac416237b81a98d6daa44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2018-12-25更新
|
331次组卷
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2卷引用:四川省雅安市2019-2020学年高二下学期期末考试数学(文)试题