解题方法
1 . 如图,在直角坐标系
中,已知点
,
,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
将
分成两部分,记左侧部分的多边形为
.设
各边长的平方和为
,
各边长的倒数和为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/4ce6cd74-5906-4c31-b0a7-e909a3c4af60.png?resizew=177)
(Ⅰ) 分别求函数
和
的解析式;
(Ⅱ)是否存在区间
,使得函数
和
在该区间上均单调递减?若存在,求
的最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06de9b0884908762a3f5440f7c93059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d358866a9bfb5ea6b9f1a612a7e119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/4ce6cd74-5906-4c31-b0a7-e909a3c4af60.png?resizew=177)
(Ⅰ) 分别求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
(Ⅱ)是否存在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
您最近一年使用:0次
名校
解题方法
2 . 已知
,则实数
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aed3dd44acdb7f48da4d674c1e6cda9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-03-13更新
|
2424次组卷
|
9卷引用:2018年6月浙江省高中学业水平考试数学试题
2018年6月浙江省高中学业水平考试数学试题浙江省2018年6月普通高中学业水平考试数学试题2浙江省2018年6月普通高中学业水平考试数学试题1浙江省金华市曙光学校2019-2020学年高一下学期6月月考数学试题(已下线)考点13 对数与对数函数(考点专练)-备战2021年新高考数学一轮复习考点微专题河北省辛集中学2020-2021学年高一上学期第三次月考数学试题浙江省台州市2020-2021学年高一上学期期末模拟数学试题(已下线)4.3对数C卷(已下线)第三章 幂、指数与对数(3大易错与4大拓展)-速记·巧练(沪教版2020必修第一册)
3 . 如图,直线
不与坐标轴垂直,且与抛物线
有且只有一个公共点
.
![](https://img.xkw.com/dksih/QBM/2020/3/12/2418132617650176/2418680251908096/STEM/64754c8b69fd4b32ad37af71dec85397.png?resizew=145)
(1)当点
的坐标为
时,求直线
的方程;
(2)设直线
与
轴的交点为
,过点
且与直线
垂直的直线
交抛物线
于
,
两点.当
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159a2d4945049c5a8f525f18763eba91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2020/3/12/2418132617650176/2418680251908096/STEM/64754c8b69fd4b32ad37af71dec85397.png?resizew=145)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705c50d8b70f124e215d23b8403faacb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2020-03-13更新
|
512次组卷
|
3卷引用:2018年6月浙江省高中学业水平考试数学试题
4 . 已知
,
是正实数,则下列式子中能使
恒成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21208364124b5c477b2ff8df1c2e8f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-13更新
|
2063次组卷
|
8卷引用:2018年6月浙江省高中学业水平考试数学试题
2018年6月浙江省高中学业水平考试数学试题浙江省2018年6月普通高中学业水平考试数学试题2浙江省2018年6月普通高中学业水平考试数学试题1倒数第13天 不等式(已下线)高一上学期期中考试选择题压轴题50题专练-举一反三系列山东省青岛市青岛第九中学2023-2024学年高一上学期10月月考数学试题(已下线)第2章 等式与不等式-【优化数学】单元测试能力卷(人教B版2019)(已下线)2.1等式性质与不等式性质【第三练】
解题方法
5 . 已知椭圆
的两个焦点
,
,离心率为
,
的周长等于
,点
、
在椭圆上,且
在
边上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/e6313105-2682-4ec4-a1cb-191f12e2645a.png?resizew=212)
(1)求椭圆
的标准方程;
(2)如图,过圆
上任意一点
作椭圆的两条切线
和
与圆
交与点
、
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2e97454c6f0810db62ffdc7d544d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e56b5cbcf69756792fc934bcc20cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/e6313105-2682-4ec4-a1cb-191f12e2645a.png?resizew=212)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图,过圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec1f8a14b2c1570aa076166017ccf33.png)
您最近一年使用:0次
解题方法
6 . 已知函数
,其中
为自然对数的底数.
(1)求曲线
在点
处的切线方程;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d45e9bb438a011f890a8827795aad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f60bbeb01fdbdb4e75d63946b22e511.png)
您最近一年使用:0次
解题方法
7 . 设函数
.
(1)求函数
的极小值;
(2)证明:当
时,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04305c8f6dcbfa474be7a2244b9faa16.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4318a47d7e83d587e74bab4d3d1f6883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4b393d0b1fb6135ed437cd5e6179bb.png)
您最近一年使用:0次
名校
8 . 已知函数
,其中a,
.
(I)若直线
是曲线
的切线,求ab的最大值;
(Ⅱ)设
,若关于x的方程
有两个不相等的实根,求a的最大整数值.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7daf401248f7e0bc5228190d4bd44178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
(I)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b29df3191b729ab737b2b88d7551644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e143d31a5ae4d2fb8cba2466bae1fe54.png)
您最近一年使用:0次
2019-10-12更新
|
1136次组卷
|
5卷引用:2019年3月浙江省绍兴市选考科目适应性考试数学试题
9 . 已知数列
满足
,且
.
(1)求证:
是等差数列;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950c6303c2ec03e48137be8addf9245c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b78e4a03d4595f14be42054b61dfc6.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe2d091607ee8419029109a54cb45ab.png)
您最近一年使用:0次
解题方法
10 . 设点
是边长为2的正三角形
的三边上的动点,则
的取值范围为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4375c2e6043d6b700c7f1ca0609d6109.png)
您最近一年使用:0次
2020-03-14更新
|
1104次组卷
|
3卷引用:浙江省2017年4月普通高中学业水平考试数学试题