1 . 在平面直角坐标系
中,动点
到两坐标轴的距离之和等于它到定点
的距离,记点P的轨迹为C.
(1)求点P的轨迹C的方程并作出动点P的轨迹的图形;
(2)设
是轨迹C上的任意一点,求:
①
的最大值;
②
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28965097a2c8f6872accc5ba80f44dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d69f777281a6319434ccb7e845cc354.png)
(1)求点P的轨迹C的方程并作出动点P的轨迹的图形;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2023d9fe6911f25c8706661c8c2b8694.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf99adccc80f28343fedd8d0aad7429.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
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2 . 已知定义在
上的函数
为增函数,且函数
的图象关于点
成中心对称,若实数
、
满足不等式
,则当
时,
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c09c5c89b0c2a92f8c4b70e69b0eada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.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/185fe322c2e3211e5d3afce36cb7c06b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d7c795bcba039d4f7a0703b78c3efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c083e095ea952ac98c3db50735a45e7.png)
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2020-06-24更新
|
773次组卷
|
3卷引用:重庆市凤鸣山中学2020届高三下学期6月月考数学(理)试题
名校
解题方法
3 . 已知点
与点
在直线
的两侧,给出下列命题:
①
;
②当
时,
有最小值,无最大值;
③存在正实数
,使得
恒成立;
④当
且
,
时,
的取值范围是
.
其中正确的命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451fc6e4248b63e70595f23842f06c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962b58f6e56b0bdd3d356b016a16760b.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3752973b200fdb1acd9549b9950c9476.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
③存在正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a8ba4c08c0cbaaecde5d13f7c7d0d2.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbac6c9561350ac84cd903500fcf82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456ba62cab8a35d85656f8604c8ca701.png)
其中正确的命题是( )
A.①② | B.②③ | C.②④ | D.③④ |
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名校
4 . 已知奇函数
满足
,则代数式
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4f0a85e88d92ee17bd346bd059afc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e72b6cd8f402df6f7ecd54b4bfd155e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88953eb84af3488f02f55420ac9ef45c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-12更新
|
702次组卷
|
3卷引用:四川省德阳市2019-2020学年高三一诊考试理科数学试卷
5 . 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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名校
解题方法
6 . 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
|
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)
名校
7 . 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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名校
8 . 已知
是函数
的两个极值点,且
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be07753eab86fa9c439a65db51c9a9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf685b8a2cd457e25c08e480254ac6c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b580d37e5c0947b84e21c0a66cc805dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd95b18dd83a59a4d44ef0f7bad01aca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知方程:
,其一根在区间
内,另一根在区间
内,则
的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d305452c4ee8dec0e2ce5f5b8a723a36.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)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 已知实数
满足:
,
,则
的最大值为 __________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be1ef6bc2c6ef9b11ffa50c5703138d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078dcf98b0f8e80ce57910dcd2ec32a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f82e90b30242c861e3c6c3c5059d917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cee6a665989fbd8619ec2460a272013.png)
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