名校
1 . 已知函数
,其中
为自然对数底数.
(1)讨论函数
的单调性,并写出相应的单调区间;
(2)已知
,若函数
对任意
都成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4700cba0f3d77596334144cc0182b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab625f9a61f620b0c59920729c52c37.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d90d3324b2e9f7b0c422af2c198dd8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
您最近一年使用:0次
2021-08-10更新
|
268次组卷
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6卷引用:福建省德化一中、永安一中、漳平一中2018届高三上学期三校联考数学(文)试题1
福建省德化一中、永安一中、漳平一中2018届高三上学期三校联考数学(文)试题1福建省德化一中、永安一中、漳平一中2018届高三上学期三校联考数学(文)试题22016届河北省衡水中学高三二调理科数学试卷(已下线)2017-2018学年第一学期期末复习备考之精准复习模拟题高二年级(文)人教版数学试题(B卷)江苏省无锡市宜兴市张渚高级中学2020-2021学年高二下学期3月月考数学试题四川省成都市简阳市阳安中学2022-2023学年高二下学期期中考试数学(文)试题
2 . 如图,在平面直角坐标系xOy中, 已知圆O:x2+y2=4,椭圆C:
+y2=1,A为椭圆右顶点.过原点O且异于坐标轴的直线与椭圆C交于B,C两点,直线AB与圆O的另一交点为P,直线PD与圆O的另一交点为Q,其中D(-
,0).设直线AB,AC的斜率分别为k1,k2.
![](https://img.xkw.com/dksih/QBM/2020/1/16/2378540545843200/2379898759782400/STEM/259859d800b349a29cece5878e02e3e5.png?resizew=120)
(1) 求k1k2的值;
(2) 记直线PQ,BC的斜率分别为kPQ,kBC,是否存在常数λ,使得kPQ=λkBC?若存在,求λ的值;若不存在,说明理由;
(3) 求证:直线AC必过点Q.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de95471bb6c16acb4fd84d8315e6a637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c55e4f3eda94bc505f103b10bc1fee7.png)
![](https://img.xkw.com/dksih/QBM/2020/1/16/2378540545843200/2379898759782400/STEM/259859d800b349a29cece5878e02e3e5.png?resizew=120)
(1) 求k1k2的值;
(2) 记直线PQ,BC的斜率分别为kPQ,kBC,是否存在常数λ,使得kPQ=λkBC?若存在,求λ的值;若不存在,说明理由;
(3) 求证:直线AC必过点Q.
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2020-01-18更新
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633次组卷
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11卷引用:福建省莆田第九中学2018届高三上学期期中考试数学(理)试题
福建省莆田第九中学2018届高三上学期期中考试数学(理)试题2016届江苏省泰州市高三第一次模拟考试理科数学试卷2016届江苏省清江中学高三下学期周练数学试卷12016届黑龙江大庆实验中学高三考前训练一文科数学试卷2016届黑龙江大庆实验中学高三考前训练一理科数学试卷四川省广元市高2018届高三第二次高考适应性统考文科数学试题四川省广元市2018届高三第二次高考适应性统考理科数学试题【全国百强校】黑龙江省哈尔滨市第六中学2017-2018学年高二下学期期末考试数学(理)试题(已下线)专题12 圆锥曲线的综合应用-《巅峰冲刺2020年高考之二轮专项提升》(江苏)(已下线)专题45 盘点圆锥曲线中的定点问题——备战2022年高考数学二轮复习常考点专题突破四川省泸州高级中学校2022届高三五月月考数学(理)试题
名校
3 . 如图,椭圆
:
的右焦点为
,右顶点、上顶点分别为点
,
已知椭圆
的焦距为
,且
.
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819158471475200/1822147915161600/STEM/6eb3d3b41b0f42e48924c3b4cc23bc9c.png?resizew=207)
(1)求椭圆
的方程;
(2)若过点
的直线
交椭圆
于
两点,当
面积取得最大时,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0dce10bf671cc2ebc67aa7fd568a9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
已知椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c4cd6e58ff472c1d61a6ebfa7762ec.png)
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819158471475200/1822147915161600/STEM/6eb3d3b41b0f42e48924c3b4cc23bc9c.png?resizew=207)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0af1a9647a129a692715564967a8ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd0efc142e3abb0d8f21e6447f0a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2017-12-12更新
|
1141次组卷
|
2卷引用:福建省莆田市仙游第一中学2017-2018学年高二上学期期中考试数学试题
4 . 已知函数
,
,(
).
(1)讨论函数
在
上零点的个数;
(2)若
有两个不同的零点
,
,求证:
.
(参考数据:
取
,
取
,
取
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb22c6dd586ff8621ebe8e4bb84855d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01d1b132ded1f61f20c80ef637ffb8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765956687c5354da85dc6d13404fb3d6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960bd3224454815ce02e2b1e0520e3b7.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b59db1909a60117d7a8935bf587ae74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e24d42f61784c642e9eb1316afdd2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ee5940db3eca3be22205d12bae26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4d3ac67dac7a4c48fbfb053a735b88.png)
您最近一年使用:0次
5 . 为宣传平潭综合试验区的“国际旅游岛”建设,试验区某旅游部门开发了一种旅游纪念产品,每件产品的成本是12元,销售价是16元,月平均销售
件.后该旅游部门通过改进工艺,在保证产品成本不变的基础上,产品的质量和技术含金量提高,于是准备将产品的售价提高.经市场分析,如果产品的销售价提高的百分率为
,那么月平均销售量减少的百分率为
.记改进工艺后,旅游部门销售该纪念品的月平均利润是
(元).
(1)写出
与
的函数关系式;
(2)改进工艺后,确定该纪念品的售价,使该旅游部门销售该纪念品的月平均利润最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e4dfb68af91a58e45ca8596abc3d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)改进工艺后,确定该纪念品的售价,使该旅游部门销售该纪念品的月平均利润最大.
您最近一年使用:0次
名校
解题方法
6 . 设函数
,其中
和
是实数,曲线
恒与
轴相切于坐标原点.
(1)求常数
的值;
(2)当
时,关于
的不等式
恒成立,求实数
的取值范围;
(3)求证:对于任意的正整数
,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d898c0ea26601b90dccfb8c11ae4712.png)
![](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/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e46371f310e03a153a1698aad9d4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:对于任意的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed08261f7e9b82eb1906cca1abff1a6.png)
![](https://img.xkw.com/dksih/QBM/2017/8/15/1752670428037120/1753289400385536/STEM/36cda1a30cef44fd841f3865b20ba631.png?resizew=3)
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7 . 已知函数
,其中
.
(1)若
,求证:当
时,
成立;
(2)若
,判断函数
的零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73943a7566c5fdd60e7122c3cdbd869d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51159984b2cb00f30b3986315019623.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0372e386405ede82b72a0f268b741c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4220892627ceb9562b815430a2f8b99a.png)
您最近一年使用:0次
2017-07-12更新
|
278次组卷
|
2卷引用:福建省泉州市泉港区一中2016-2017学年高二下学期期末考试数学(理)试题
名校
8 . 已知函数
,若曲线
上存在两点,这两点关于直线
的对称点都在曲线
上,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba985ec4776491408c8dee49323f4f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6e69ad1a27916fb5c3d5901ded134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-06-11更新
|
2026次组卷
|
4卷引用:福建省泉州市2017届高三(5月)第二次质量检查数学(理)试题
福建省泉州市2017届高三(5月)第二次质量检查数学(理)试题辽宁省沈阳铁路实验中学2018-2019学年高二下学期期中考试数学(理)试题(已下线)专题2-1 函数性质及其应用(讲+练)-3广东省汕头市金山中学2024届高三上学期第一次模拟考试数学试题
名校
9 . 函数
.
(Ⅰ)讨论
的单调性;
(Ⅱ)若
且满足:对
,
,都有
,试比较
与
的大小,并证明.
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/82a01a4ab57b402792009c57c60589a3.png?resizew=164)
(Ⅰ)讨论
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/e753095625ff452a93fd6759c3d989bb.png?resizew=36)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/110d2a9ce68a44e49b732b73280597fa.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/72a60cdb8a52472c98891587afee92b0.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/243ede4294d54d9d936d700d979c0724.png?resizew=68)
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/1318ec3a4ee541c4805b71443d8b9fb8.png?resizew=169)
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/c6510d5c5b6644acad76ca5b3f32e042.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2017/6/10/1706162897731584/1706691461079040/STEM/e223ec1eec1a4a1d908dc1934ccd2649.png?resizew=29)
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10 . 已知函数
为
的导函数.
(Ⅰ)令
求
的单调区间;
(Ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7694913d438b5075bea3515738ac32de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅰ)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8211749eaa81821bd9738d067f441b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(Ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b727fae2e8d5648700d3b39dfc7860f.png)
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