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解题方法
1 . 已知函数
是定义域为
的奇函数.
(1)求实数
的值,并证明
在
上单调递增;
(2)已知
且
,若对于任意的
、
,都有
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a1836f99fe04969deeca4cbdc08fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(2)已知
![](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/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0db7eb2d7545d055f1cb6e8a7b5e1dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec6f6b77b20badcccf98b1fd4479368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2022-06-23更新
|
1922次组卷
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9卷引用:上海市位育中学2023届高三下学期开学考试数学试题
上海市位育中学2023届高三下学期开学考试数学试题上海市虹口区2022届高三二模数学试题(已下线)2023年上海高考数学模拟卷02福建省莆田第二中学2024届高三第一次返校考试数学试题河北省曲阳县第一高级中学2021-2022学年高二下学期期末模拟数学试题(已下线)第03讲 函数及其性质-2(已下线)专题02 函数的概念与性质必考题型分类训练-3(已下线)第04讲 指数与指数函数(四大题型)(讲义)(已下线)专题11 幂指对综合大题归类
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2 . 已知
,
,若对任意实数
均有
,则有
的最小值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc94dd7db32a46040f6097bc73b1d752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa1c68cebf2203d277f61cfdbacf175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5933c80afdcf7c822d60a3a1b24f63d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9fa8e8d7d12526a82e22c7ba4a3a610.png)
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3 . 若关于
的不等式
在
时恒成立,则实数
的取值范围是_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f756cb15c1caf53f5164fc72632b973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-08-16更新
|
909次组卷
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7卷引用:上海市格致中学2019-2020高三9月开学考数学
14-15高一上·广东东莞·开学考试
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4 . 定义在D上的函数
,如果满足:对任意
,存在常数
,都有
成立,则称
是D上的有界函数,其中M称为函数
的上界
已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20072b3a023fc79dae0da060b66b3104.png)
当
,求函数
在
上的值域,并判断函数
在
上是否为有界函数,请说明理由;
若函数
在
上是以3为上界的有界函数,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db87f86dbee425d45545f8ed18480175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9163631ac547ec5e5df3105b3380fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8dd05b66bf393ce3f3994eaa1ca8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20072b3a023fc79dae0da060b66b3104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302337058242c7b78e3eb4ac7210b7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e85f7a8430d8229a4bae171ba12f055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e85f7a8430d8229a4bae171ba12f055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9589f0f76da55001a64079a8143dfd.png)
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2016-12-03更新
|
1148次组卷
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5卷引用:上海市位育中学2015-2016学年高二上学期开学考试数学试题
上海市位育中学2015-2016学年高二上学期开学考试数学试题(已下线)2014-2015学年广东省东莞南开实验学校高一上学期期初考试数学试卷上海市青浦区2018-2019学年高一上学期终学业质量调研测试数学试题广东省汕头市潮南区2018-2019学年高一上学期期末数学试题内蒙古自治区鄂尔多斯市第一中学2022-2023学年高一上学期期末数学试题
12-13高一上·福建泉州·期末
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5 . 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
的上界.已知函数
.
(Ⅰ)当
时,求函数
在
上的值域,并判断函数
在
上是否为有界函数,请说明理由;
(Ⅱ)若
是
上的有界函数,且
的上界为3,求实数
的取值范围;
(Ⅲ)若
,求函数
在
上的上界
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db87f86dbee425d45545f8ed18480175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9163631ac547ec5e5df3105b3380fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8dd05b66bf393ce3f3994eaa1ca8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.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/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110a6fcac6711fe1fe8547a4f437e1e2.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302337058242c7b78e3eb4ac7210b7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cead849c0dc4a82285808a7e081ad75c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cead849c0dc4a82285808a7e081ad75c.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be71c309001092d6c1283d481dc9c28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅲ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8aa5c24766744e194574d31ca534c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd330acca8e17f5ff9aca1f0f312df50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7ac9eeaa749dc0f7077161f1c8e66b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
您最近一年使用:0次
2016-12-01更新
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1418次组卷
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4卷引用:上海市七宝中学2017-2018学年高一下学期开学考试数学试题
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