1 . 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
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568次组卷
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2卷引用:山东省聊城市2021届高三二模联考数学试题
13-14高二上·山东威海·期末
2 . 下列四个命题:
①若
,则
;
②
,
的最小值为
;
③椭圆
比椭圆
更接近于圆;
④设
为平面内两个定点,若有
,则动点
的轨迹是椭圆;
其中真命题的序号为________________ .(写出所有真命题的序号)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1184e63f54345c893c5118cf25aea8d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb54b1b3617ebc502cb44194cbcd1dc.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1501c02defea7e4b30bc91944dec8b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
③椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
④设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab1b8b10322813dad8c24ed024cd149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
其中真命题的序号为
您最近一年使用:0次
13-14高三下·山东威海·阶段练习
3 . 函数
的定义域为
,其图象上任一点
满足
,则给出以下四个命题:
①函数
一定是偶函数; ②函数
可能是奇函数;
③函数
在
单调递增; ④若
是偶函数,其值域为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
其中正确的序号为_______________ .(把所有正确的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/528597e52afcd661e2aaca97e709ca29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
其中正确的序号为
您最近一年使用:0次
名校
解题方法
4 . 有以下结论:
①若函数
对任意实数
都有
,则
图象关于直线
对称;
②函数
与
的图象关于直线
对称;
③对于函数
(
,且
)图象上任意两点
,
,一定有
;
④
是使得
(
且
)成立的充分不必要条件.
其中正确结论的序号为_________ .
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7852a186f6207db185658e9e00ca0eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290dfa43bcecc055837374f00dce6fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67fbb13f7d4b8abb69b93a398fb66ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
③对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ff35f3b50966a5e3cbb0b5977af7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7a1783349936cc7254a4a8694c6812.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4175a7316c311be8544ad68a0a9fcf77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
其中正确结论的序号为
您最近一年使用:0次
2020-12-16更新
|
413次组卷
|
3卷引用:山东省泰安市泰安第一中学2021-2022学年高一上学期12月月考数学试题
名校
5 . 已知a>0,b>0,a+b>2,有下列4个结论:①ab>1;②a2+b2>2;③
和
中至少有一个数小于1;④
和
中至少有一个小于2,其中,全部正确结论的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c70fcaa661df4fbcad820b439accda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9237dbe3a4f28962ef2870b4e7dab599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb82093f9c1ec3ee4218ae8f8377644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165b2250624fc1f1551d6c38991487d6.png)
您最近一年使用:0次
2020-10-27更新
|
965次组卷
|
7卷引用:山东省青岛市市北区青岛第十六中学2020-2021学年高一上学期第一学段模块检测数学试题
山东省青岛市市北区青岛第十六中学2020-2021学年高一上学期第一学段模块检测数学试题北京市清华大学附属中学2020-2021学年高一10月考数学试题湖北省黄石市第二中学2020-2021学年高一上学期11月统测数学试题(已下线)2.2.2 间接证明(重点练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-2)(已下线)2.2.2 间接证明(重点练)-2020-2021学年高二数学(文)十分钟同步课堂专练(人教A版选修1-2)陕西省咸阳市武功县普集高中2021-2022学年高二下学期第一次月考理科数学试题(已下线)3.2 基本不等式(1)-【帮课堂】(苏教版2019必修第一册)
解题方法
6 . 在四棱锥P﹣ABCD中,平面ABCD⊥平面PCD,底面ABCD为梯形,AB∥CD,AD⊥DC.
![](https://img.xkw.com/dksih/QBM/2020/7/24/2512890808475648/2512940385443840/STEM/85b7d32740144d698120bb221e6062f8.png?resizew=195)
(1)AB∥平面PCD;
(2)AD⊥平面PCD;
(3)M是棱PA的中点,棱BC上存在一点F,使MF∥PC.
正确命题的序号为_____ .
![](https://img.xkw.com/dksih/QBM/2020/7/24/2512890808475648/2512940385443840/STEM/85b7d32740144d698120bb221e6062f8.png?resizew=195)
(1)AB∥平面PCD;
(2)AD⊥平面PCD;
(3)M是棱PA的中点,棱BC上存在一点F,使MF∥PC.
正确命题的序号为
您最近一年使用:0次
名校
7 . 给出下列四个命题:
①
的对称轴为
;
②函数
的最大值为2;
③
;
④函数
在区间
上单调递增.
其中正确命题的序号为__________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f077939d9a656117f9b58e56bcc285a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2318c97395fdfe5e3e0050bfa11670.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfd88961b692edcc69fd9f1d3d83061.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546936dfa6b332f1bf2140da57d46cfb.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b827bd71bdb9566fec76cac6fc44da48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95a1d9a86dac105a6136ab2452b35b2.png)
其中正确命题的序号为
您最近一年使用:0次
2019-11-30更新
|
817次组卷
|
5卷引用:山东省济南市历城第二中学2019-2020学年高一上学期期末数学试题
名校
8 . 给出以下四个结论:①函数
与
的图象只有一个交点;②函数
与
的图象有无数个交点;③函数
与
的图象有三个交点;④函数
与
的图象只有一个交点.则正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ea22683d6d5cdac7902d98b1c7995c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996a92bcfc7fb20171fa1768d5ffddb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051ca34c18f9a27e5f193cbf52328b9c.png)
A.① | B.② | C.③ | D.④ |
您最近一年使用:0次
2020-03-03更新
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380次组卷
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2卷引用:山东省日照市2018-2019学年高一下学期期末数学试题
10-11高二下·山东济宁·期末
9 . 分类变量X和Y的列表如下,则下列说法判断正确的是________ .(填序号)
![](https://img.xkw.com/dksih/QBM/2012/8/30/1570992453484544/1570992458588160/STEM/0956e3dc7a204ad3b7b182e4e0b18513.png?resizew=487)
①
越小,说明X与Y的关系越弱;②
越大,说明X与Y的关系越强;
③
越大,说明X与Y的关系越强;④
越接近于0,说明X与Y的关系越强.
![](https://img.xkw.com/dksih/QBM/2012/8/30/1570992453484544/1570992458588160/STEM/0956e3dc7a204ad3b7b182e4e0b18513.png?resizew=487)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f9683760df4268272525c8082c7ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f9683760df4268272525c8082c7ee5.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6d898f3a19b34094a8188a49e524b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6d898f3a19b34094a8188a49e524b7.png)
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13-14高二下·山东济宁·阶段练习
名校
解题方法
10 . 如图是
的导函数的图像,现有四种说法:
![](https://img.xkw.com/dksih/QBM/2014/4/30/1571700401618944/1571700407123968/STEM/84da4425ecd848469b3b2c6ca4e08263.png?resizew=167)
①
在
上是增函数;
②
是
的极小值点;
③
在
上是减函数,在
上是增函数;
④
是
的极小值点;
以上正确的序号为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a673c4b255a76a31893c53b4e8c3420b.png)
![](https://img.xkw.com/dksih/QBM/2014/4/30/1571700401618944/1571700407123968/STEM/84da4425ecd848469b3b2c6ca4e08263.png?resizew=167)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138506a762e636aa75a4d54f5b739b89.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3247f03357462fec934f37c65ebdc77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27cf818dd484cc4cebd40a5f28eb8e9f.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
以上正确的序号为________.
您最近一年使用:0次
2016-12-02更新
|
3907次组卷
|
5卷引用:2013-2014学年山东济宁鱼台二中高二3月质量检测理科数学试卷
(已下线)2013-2014学年山东济宁鱼台二中高二3月质量检测理科数学试卷2015-2016学年山东省济宁一中高二下期中文科数学试卷2015-2016学年山东曲阜师大附中高二下学期期中数学(文)试卷安徽省滁州市民办高中2019-2020学年高二上学期期末数学(文)试题天津市和平区双菱中学2019-2020学年高二4月阶段检测数学试题