名校
解题方法
1 . 某中学高一学生组建了数学研究性学习小组.在一次研究活动中,他们定义了一种新运算“
”:
(
为自然对数的底数,
),
,
.进一步研究,发现该运算有许多奇妙的性质,如:
,
等等.
(1)对任意实数
,
,
,请判断
是否成立?若成立请证明;若不成立,请举反例说明.
(2)若
(
),
,
,
.定义闭区间
(
)的长度为
,若对任意长度为1的区间
,存在
,
,
,求正数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c93bcb878bc779bf5b519b0d50bda3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25da8298b6a96d627f3e8c990e55f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cccdff49c3efe6e7a7dbbf69db9319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347604752750649bde7b37c456c8263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c46a883a70c6ca89d9877ed4894bc5.png)
(1)对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435bc3998f401828773efe39e438036b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8643553d6f6bf1c63cb350c926f912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fb4dfd099f690838d8d352ce1b72e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c20be29cc64fda3707bdf8b2faf7a1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543bba022c9e1d95c8bf76f8eed4b17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351629c193354cdcf202133052e45028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c54705d32dc6820f1a90eec2225dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ad3c82177b7c734e7acb86377bb05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01628488d507b44d6e8faa2dedd49bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2023-02-16更新
|
481次组卷
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3卷引用:海南省海南中学2023-2024学年高三上学期第6次月考数学试题
2 . 已知函数
.
(1)判断
的单调性,并比较
与
的大小;
(2)若函数
,其中
,判断
的零点的个数,并说明理由.
参考数据:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b26f55c7c29644dfe0277d3e2adf10.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7526dab25cbf8489567f1d92aa71ee32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2748b5620b52169c5cf05c8df92f7340.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc138ac692a8628f521dc7de923d1777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da44073eda402265e5f4812bdcfb065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b7cfcc147916ae7eeb5d557fea945e.png)
您最近一年使用:0次
2021-05-13更新
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1373次组卷
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7卷引用:海南省海口市2021届高考调研考试数学试题
海南省海口市2021届高考调研考试数学试题河北衡水中学2021届高三三轮复习自主复习旗开得胜数学(三)试题(已下线)第3章 函数概念与性质(强化篇)-2021-2022学年高一数学单元过关卷(人教A版2019必修第一册)广东省东莞市东华高级中学2020-2021学年高二下学期期末数学试题(已下线)热点05 函数的单调性-2022年高考数学核心热点突破(全国通用版)【学科网名师堂】四川省内江市威远中学2021-2022学年高三上学期第三次月考数学(理)试题宁夏石嘴山市第三中学2022届高三上学期第二次月考数学(理)试题
名校
解题方法
3 . 函数
.
(1)判断并用定义证明函数f(x)在(0,1)上的单调性;
(2)若
,
,求证:
;
(3)若
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c03bee625be7e5220d947fc2100eb808.png)
(1)判断并用定义证明函数f(x)在(0,1)上的单调性;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3c99ca3d73d87d3fdbef88c859dd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419504736c4934f6e0df4114c3743944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca3ecbbaca8eeb1cfa8f4035f7d5726.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
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2021-11-22更新
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441次组卷
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4卷引用:海南省海口四中2022-2023学年高一上学期期中考试数学试题
海南省海口四中2022-2023学年高一上学期期中考试数学试题浙江省杭州市第二中学滨江校区2021-2022学年高一上学期期中数学试题(已下线)专题3.5 函数性质及其应用大题专项训练【六大题型】-举一反三系列(已下线)高一上学期期中复习【第三章 函数的概念与性质】十大题型归纳(拔尖篇)-举一反三系列
解题方法
4 . 已知函数
.
(1)求
,
的值;
(2)设
,试比较
,
的大小,并说明理由;
(3)若不等式
对一切
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20074cd86a016a4cf11fb44980b00a23.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce6155e181e21ce56ea658b70f8af17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9347bb4ffedcbea2f4c16d047a138d75.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a6f362a7f8f972d6b329a882e940d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f484115a9df1b6060d6b14df85c6f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35770a47ffcba6bf1d94eceabb416d96.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e69cdd6c2f610f3a6d6873819e5a3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d978e4e41c7b382a640d8c548e8ccb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-09-07更新
|
345次组卷
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2卷引用:海南省三亚市华侨学校2020-2021学年高一上学期期中数学试题