2021高一·上海·专题练习
1 . 求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b20679653e18d81141dcea23076ce6aa.png)
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2021-09-25更新
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6卷引用:第11讲 三角不等式及其应用-【A+课堂】2021-2022学年高一数学同步精讲精练(沪教版2020必修第一册)
(已下线)第11讲 三角不等式及其应用-【A+课堂】2021-2022学年高一数学同步精讲精练(沪教版2020必修第一册)(已下线)2.3 基本不等式及其应用(分层练习)-高一数学同步精品课堂(沪教版2020必修第一册)沪教版(2020) 必修第一册 堂堂清 第二章 2.3(3)基本不等式及其应用(已下线)2.3 三角不等式(第3课时)(2)高中数学解题兵法 第六十九讲 构造法(已下线)专题15 盘点构造函数能解决的六种问题-1
2 . 如果函数
,
满足:对于任意
,均有
(n为正整数)成立,则称函数有“n级”性质.
(1)分别判断
,
是否具有“1级”性质,并说明理由.
(2)在区间
上是否存在具有“1级”性质的奇函数
,满足:
,且对于任意实数
,都有
成立?若存在,请写出一个满足条件的函数;若不存在,请说明理由.
(3)已知定义域为R的函数
具有“2级”性质,求证:对任意
,都有
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc1bc250c8a6523a1be394ff48d4a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab998f3d63fbde247f97762d40b8508.png)
(1)分别判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1c079afd1b058adc67a50f48f3d466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db9951cce63812acfa2668ef074e7ca.png)
(2)在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a5c5e106845cc7549bc3473818d31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4965f7f7ca24fd98f0ffd019b3e8bfb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbc36c77007b5a6b181cd8bacdd6a2.png)
(3)已知定义域为R的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0ac5d33acfa98a8e7081e5f325ddad.png)
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3 . 试证:对任意的正整数n,有
<
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f02d2ea87b89e9534bf24f786bd41ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
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名校
4 . 已知函数
在区间
上的最大值为4,最小值为1.
(1)求实数
、
的值;
(2)记
,若
在
上是单调函数,求实数
的取值范围;
(3)对于函数
,用
,1,2,
,
,
将区间
任意划分成
个小区间,若存在常数
,使得和式
对任意的划分恒成立,则称函数
为
上的有界变差函数.记
,试判断函数
是否为在
上的有界变差函数?若是,求
的最小值;若不是,请说明理由.
(参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81dc73f0246e8555678221636aab594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a248e47163191168a1b363937eebd618.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4992110dcdc42efbaeeb91751c1566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee973802013f7615c44d2b90d019806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/719afcfdeeba1b84b02b5f8c40ac7842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec3d6c998e1e5e1984524136795923c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2480f87a11c4cd450bc9454ea7276722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fabfa18c7f8992ec4c651bc3e6a8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb1ed40a8f67e93401e544284ceaaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627565d32e529cafcd2744d006ec6de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764252096a427d22e7806422c0bff54f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663db8a8e903e6033390a8efc5d8acda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b8dd4641ec21dab8dd7d1d2e00c3681.png)
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