1 . 对于函数
,若函数
是严格增函数,则称函数
具有性质
.
(1)若
,求
的解析式,并判断
是否具有性质
;
(2)判断命题“严格减函数不具有性质
”是否为真命题,并说明理由;
(3)若函数
具有性质
,求实数
的取值范围,并讨论此时函数
在区间
上零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07320a8812534c83460723efe86fa365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d03211706ec9797632dedba4124f398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)判断命题“严格减函数不具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89ef5467076c43c044b5618e6b0a1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eeed313aa6d81b93f134b56de244214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
您最近一年使用:0次
2 . 若从无穷数列
中任取若干项
(其中
)都依次为数列
中的连续
项,则称
是
的“衍生数列".给出以下两个命题:
(1)数列
是某个数列的“衍生数列”;
(2)若
各项均为0或1,且是自身的“衍生数列”,则
从某一项起为常数列.下列判断正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d255743a932f013f8cd3c90942aea1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bacaf758c8b5c2f52624f80debc02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4429ffb4a826e1c7c474eea9c539391d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.(1)(2)均为真命题 |
B.(1)(2)均为假命题 |
C.(1)为真命题,(2)为假命题 |
D.(1)为假命题,(2)为真命题 |
您最近一年使用:0次
名校
3 . 曲线
:
,下列两个命题:
命题甲:当
时,曲线与坐标轴围成的面积小于128;
命题乙:当k=2n,
时,曲线围成的面积总大于4;
下面说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94555857a26590865f337f8c4a93c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddcb2f6d5e88e8c3e5c8370e803a319.png)
命题甲:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a2a34b4317deffa40ba34e269c2b81.png)
命题乙:当k=2n,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
下面说法正确的是( )
A.甲是真命题,乙是真命题 | B.甲是真命题,乙是假命题 |
C.甲是假命题,乙是真命题 | D.甲是假命题,乙是假命题 |
您最近一年使用:0次
2023-06-05更新
|
806次组卷
|
5卷引用:上海市大同中学2023届高三三模数学试题
上海市大同中学2023届高三三模数学试题上海市行知中学2024届高三上学期10月月考数学试题(已下线)2.5 曲线与方程(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)第2章 圆锥曲线(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)(已下线)期末测试卷01(测试范围:第1-8章)-备战2023-2024学年高二数学下学期期末真题分类汇编(沪教版2020选择性必修,上海专用)
2023·全国·模拟预测
解题方法
4 . 设点
在椭圆
内,直线
.
(1)求
与
的交点个数;
(2)设
为
上的动点,直线
与
相交于
两点.给出下列命题:
①存在点
,使得
成等差数列;
②存在点
,使得
成等差数列;
③存在点
,使得
成等比数列;
请从以上三个命题中选择一个,证明该命题为假命题.
注:若选择多个命题分别作答,则按所做的第一个计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c993e34db40190e64654a10b0c13c672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6678a1a5cc14704ecf06a7648ff543.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4aca03910382accfe738520daf689c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
①存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f23bfdeeaa1efc12f64328e962d395b.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d3db975e7888ac13b4448b874b972d.png)
③存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d3db975e7888ac13b4448b874b972d.png)
请从以上三个命题中选择一个,证明该命题为假命题.
注:若选择多个命题分别作答,则按所做的第一个计分.
您最近一年使用:0次
名校
5 . 已知
的三个内角分别为A,B,C,则下列判断正确的是( )
命题p:对任何锐角A,都存在
,使得
;
命题q:对任何锐角A,都存在
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
命题p:对任何锐角A,都存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18dbd4b3e3123e480788b3921a8e1bd1.png)
命题q:对任何锐角A,都存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3daa8291bbff3605c2b42d8234ad155.png)
A.p是真命题,q是真命题 | B.p是真命题,q是假命题 |
C.p是假命题,q是真命题 | D.p是假命题,q是假命题 |
您最近一年使用:0次
6 . 已知平面上三点
,
,
,若动点P满足
,有以下两个命题:①三角形APB面积的最大值为1;②
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44fbffcf19a245f3428ba0c35937993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3752eaf8b6f65d3faf930dc54bf2ef1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abebec13ecd437c05ceeece94889b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96cf4e0597c02b029561a2d6d82a2ad4.png)
A.①为真命题,②为真命题 | B.①为真命题,②为假命题 |
C.①为假命题,②为真命题 | D.①为假命题,②为假命题 |
您最近一年使用:0次
解题方法
7 . 如图,在正方体
中,点
在直线
运动,给出四个命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/13290010-b694-4d86-9938-28402ed871eb.png?resizew=161)
(1)三棱锥
的体积不变;
(2)直线
与直线
所成的角最小值为
;
(3)二面角
的大小不变;
(4)
是平面
上到直线
与直线
的距离相等的点,则点
的轨迹是抛物线.正确的命题个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/13290010-b694-4d86-9938-28402ed871eb.png?resizew=161)
(1)三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad99ef5e70de37345c708b758d545f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
(3)二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67094912ebf6dd7b27b835af55df4826.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
20-21高二下·浙江·期末
名校
解题方法
8 . 关于函数
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e9e380a0892621b0c2c34682f3db78.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
2021-06-03更新
|
648次组卷
|
4卷引用:【新东方】高中数学20210527-012【2021】【高二下】
(已下线)【新东方】高中数学20210527-012【2021】【高二下】(已下线)期末测试卷02-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)浙江省“七彩阳光”新高考研究联盟2020-2021学年高二下学期期中联考数学试题江西省吉安市永丰县永丰中学2022-2023学年高二下学期期末数学复习试题
9 . 如图所示,平面中两条直线
与
相交于点
,对于平面上任意一点
,若
,
分别是
到直线
与
的距离,则称有序非负实数对
是点
的“距离坐标”,给出下列四个命题:
![](https://img.xkw.com/dksih/QBM/2021/4/23/2706077913825280/2707664354615296/STEM/9e15335e-6124-48a7-8b6a-2816d5519936.png)
①“距离坐标”为
的两点间距离为2;
②若
,则点
的轨迹是一条过
点的直线;
③若
,则“距离坐标”为
的点有且仅有4个;
④若直线
与
的夹角是60°,则
或
.
其中所有正确命题的序号为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.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/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e257b2b02bcd57c116841807979bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2021/4/23/2706077913825280/2707664354615296/STEM/9e15335e-6124-48a7-8b6a-2816d5519936.png)
①“距离坐标”为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72583e4cbf9e64cf692ecf600983fdee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6c0ae5144fcc033002b54006a9cfdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e257b2b02bcd57c116841807979bbc.png)
④若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441347596788bcbd19dd6bbfb2ce7b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a87cc610f1c8796f6c477c9fce58ec.png)
其中所有正确命题的序号为
您最近一年使用:0次
2021-04-25更新
|
568次组卷
|
2卷引用:山东省聊城市2021届高三二模联考数学试题
解题方法
10 . 关于下列两个命题:设
是定义在
上的偶函数,且当
时,
单调,则方程
的所有根之和为______ ;对于
有性质
:“对
时,必有
.现给定①
;②
;现与
对比,①中
、②中
同样也有性质
的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ab9a7e0459170b74091235ed37155c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49e0a5e0946955251b7a2f3bfc21ed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d206c6853cb138f3d8db4f9acc9b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b03422c87acca23dcc4e51e40221e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04cf321d8cf6a9c7adff9900857732b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6667b1e60410178985f7ee42e161abab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次