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解题方法
1 . 若对于任意x∈[1,4],不等式0≤ax2+bx+4a≤4x恒成立,|a|+|a+b+25|的范围为_____ .
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2020-02-27更新
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548次组卷
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2卷引用:浙江省宁波市镇海区镇海中学2018-2019学年高二下学期期末数学试题
2 . 若
满足线性约束条件
.
(1)
的最小值等于______ ;
(2)若
恒成立,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26af2deeff337482843b4b3df0464a8c.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608d578d9b6c30f065dc909dfb41d907.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e886ebe0b4b2c015cec6b1e5135e375e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知在平面直角坐标系中,
,
(
),其中数列
、
都是递增数列.
(1)若
,
,判断直线
与
是否平行;
(2)若数列
、
都是正项等差数列,它们的公差分别为
、
,设四边形
的面积为
(
),求证:
也是等差数列;
(3)若
,
(
),
,记直线
的斜率为
,数列
前8项依次递减,求满足条件的数列
的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42fdaa4763fc6834ed12d4f780c74c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5010b2e9175fdc6fbf5bf88541421d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff1c33b81ac2f065d37faef37504bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81496535a302e25c366e3ffa46e0c54b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34876d748f30fa4fc2eb6a686b5ff5.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f2a8097208d996bf69f9b0795b0e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4b5779873cb3f4366dbfdb983dec81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f8d1dcfab8e4079c100653603acf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b741df7d2e8cd077989e4e5401c7d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3241705cd0b7fae09b96df8b3e9af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374cb268ffa23fc0bf12c6e6dc873c4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbbf4d763f3cbe5a71707bc19c78191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b311784db139326c27b72a3d55e29c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
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4 . 已知实数
满足
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1b40275e6bef6f13599f6d40d01d4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0744f87b6589a0226dee26195758ca1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-10-29更新
|
1360次组卷
|
5卷引用:江苏省海安高级中学2019-2020学年高二上学期10月月考数学试题
江苏省海安高级中学2019-2020学年高二上学期10月月考数学试题江西省上饶市2019-2020学年高二上学期期末数学(理)试题湖南省长沙市八校联考2022-2023学年高二上学期第一次月考数学试题广东省实验中学2018-2019学年高一下学期期末考试数学试题(已下线)4.2.3 直线与圆的方程的应用-2020-2021学年高一数学课时同步练(人教A版必修2)
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5 . 已知点
到直线
与直线
的距离相等,且
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ed34fb976d59e36f5ae68ba97f5ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ee71cd16525762ba7c697dcc0f32de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7cea6e2d2eec9cb319ab8fcfa34872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf05e22049aa0a0dc9bb7bb4714a58d.png)
A.![]() | B.1 | C.![]() | D.![]() |
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解题方法
6 . 太极图被称为“中华第—图”,从孔庙大成殿梁柱至白外五观的标识物;从道袍、卦摊、中医、气功、武术到南韩国旗、新加坡空军机徽…,太极图无不跃其上,这种广为人知的太极图,其形状如阴阳两鱼互抱在—起,因而被称为“阴阳鱼太极图”.在如图所示的阴阳鱼图案中,阴影部分的区域可用不等式组
或
来表示,设
是阴影中任—点,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fdcc4c25861c6710d63853fea90809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9d4e5fa11d264bebec97ba64a47fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac1dc44d4885c23bd018bdba6b44071.png)
![](https://img.xkw.com/dksih/QBM/2019/9/12/2289300669751296/2289601368670208/STEM/16fd92fbe0dc4dbbaf1c815f2da1e75e.png?resizew=216)
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解题方法
7 . 已知函数
在区间
内取极大值,在区间
内取极小值,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea41070772e93ff4d4fa1a8e903271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d12be64f5b4eb485b2ff2f832ab822c.png)
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2020-08-05更新
|
452次组卷
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4卷引用:2016-2017年黑龙江宝清高级中学高二理上月考二数学试卷
2016-2017年黑龙江宝清高级中学高二理上月考二数学试卷江苏省南京市金陵中学2020届高三下学期6月考前适应性训练数学试题(已下线)押第14题 线性规划-备战2021年高考数学(文)临考题号押题(全国卷2)北京名校2023届高三一轮总复习 第2章 函数与导数 2.14 导数的应用(2)
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8 . 已知△ABC中,顶点A(1,0)、重心G
垂心H![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea58fa1703de4c3e3d5f12252ca1936.png)
(1)求边BC所在直线的方程;
(2)求边AB、AC所在直线的方程;
(3)若P是△ABC内部(包括边界)一动点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ddb208beac4f3e38d306d7c2773fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea58fa1703de4c3e3d5f12252ca1936.png)
(1)求边BC所在直线的方程;
(2)求边AB、AC所在直线的方程;
(3)若P是△ABC内部(包括边界)一动点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4df9549f0bcb8187a02617b338f6b9f.png)
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9 . 如图,在平面直角坐标系
中,直线
与直线
之间的阴影部分记为
,区域
中动点
到
的距离之积为1.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/09e849b8-144c-4573-9cbd-68811fdee85c.png?resizew=174)
(1)求点
的轨迹
的方程;
(2)对于区域
中动点
,求
的取值范围;
(3)动直线
穿过区域
,分别交直线
于
两点,若直线
与点
的轨迹
有且只有一个公共点,求证:
的面积值为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bce9bdeb6b4e2401d9907f4e3f0c540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc20ecfb48de46ccba10337431d7fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/09e849b8-144c-4573-9cbd-68811fdee85c.png?resizew=174)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)对于区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3cb96f78ec5153e97ba299e8d18ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03eb14f4011e6430a7b2113684a7e478.png)
(3)动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
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10 . 在坐标平面上有两个区域
,
由
所确定,
由
所确定,其中实数
,若点
在区域
内,则
的最小值为__________ ;
和
的公共面积的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fdf1eda89fff8109a376e8bce1ff878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348771857779c9db5f85996a891111cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d348672c1672a6f06295f3050c229c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1995404eb114809bc18fbdb4f1388b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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