名校
1 . 已知函数
,
有以下结论:
①
的图象关于直线
轴对称②
在区间
上单调递减
③
的一个对称中心是
④
的最大值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
则上述说法正确的序号为__________ (请填上所有正确序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0da99e273bf774b7a5987067f454a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e083a1a8485c3f5ed1e0ec7518096c1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f63f827cdf0e83612e5ade389c297b0.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c1fad7af7df8e93160cf83788bec5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
则上述说法正确的序号为
您最近一年使用:0次
2019-07-29更新
|
5714次组卷
|
15卷引用:海南省海口市第一中学2019-2020学年高三上学期10月月考数学试题
海南省海口市第一中学2019-2020学年高三上学期10月月考数学试题河北省石家庄市辛集市中学2019-2020学年高三第三次月考数学(文)试题2020届福建省莆田第二十五中学高三上学期期末数学(文)试题2020届海南省儋州市第一中学高三上学期第二次月考数学试题(已下线)专题03 三角(第二篇)-备战2020高考数学黄金30题系列之压轴题(新课标版)黑龙江省哈尔滨市第六中学校2020-2021学年高三9月月考数学(文)试题黑龙江省哈尔滨市第六中学2020-2021学年度高三上学期九月月考文科数学试题(已下线)河南省三门峡市2020-2021学年度高三第一次大练习数学(理科)试题黑龙江省双鸭山市第一中学2022-2023学年高三上学期开学考试数学试题辽宁省凌源二中2018-2019学年高一下学期期末数学试题山东省菏泽市2018-2019学年高一下学期期末数学试题山东省菏泽市东明县第一中学2018-2019学年高一下学期期末数学试题山西省山西大学附属中学2019-2020学年高一下学期5月模块诊断数学试题(已下线)5.6 函数y=Asin(ωx+φ) -2021-2022学年高一数学同步辅导讲义与检测(人教A版2019必修第一册)上海市奉贤区致远高级中学2021-2022学年高一下学期期中在线教学评估数学试题
2 . 在数列
中,若
为常数
,则
为“等方差数列”,下列是对“等方差数列”的判断;
①
是等方差数列,则
是等差数列;
②
是等方差数列;
③ 若
是等方差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed8c521ba833022d7f57a4d44b2824f.png)
为常数
也是等方差数列;
④ 若
既是等方差数列,又是等差数列,则该数列为常数列.
其中正确命题序号为__________ .(将所有正确的命题序号填在横线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca1c0c66577dd728e61895ebc96b3ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c806dc9bf2cad0cb20220d23bd252a2f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef891fc99921b6093392c1e3c5347d1.png)
③ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed8c521ba833022d7f57a4d44b2824f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b6a244eab64b41c3f98222feb04855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
④ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
其中正确命题序号为
您最近一年使用:0次
3 . 定义
是
的导函数
的导函数,若方程
有实数解
,则称点
,
为函数
的“拐点”.可以证明,任意三次函数
都有“拐点”和对称中心,且“拐点”就是其对称中心,请你根据这一结论判断下列命题:
①存在有两个及两个以上对称中心的三次函数;
②函数
的对称中心也是函数
的一个对称中心;
③存在三次函数
,方程
有实数解
,且点
为函数
的对称中心;
④若函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac322fc4206da717226ad89530effdd5.png)
.
其中正确命题的序号为_______ (把所有正确命题的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac282e92da3691942a6ba8511de2303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1fa6ca9eb7cea9131dad36db6a0ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b589732202941f828016f982c92996b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60a6d986c80039124c8a869b0e481af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012429b7101ba0f84e7b45598ed12db9.png)
①存在有两个及两个以上对称中心的三次函数;
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c087948f0abff7f6b3218860c973f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6efc139f70df469a51f530e03c98abaa.png)
③存在三次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a42dfca9f27abe558892fc0b7db96df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb0c68f6e69ab9da3ea2c8c2f48f683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed0aa12ed308e80e35f1bb6101d36d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b8df99b8a0839cba0eb04427c0a1b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac322fc4206da717226ad89530effdd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb688d1f5aa60c67b53486b84f0aa432.png)
其中正确命题的序号为
您最近一年使用:0次
2012·四川自贡·三模
4 . 对于三次函数
,定义
是
的导函数
的导函数,若方程
有实数解
,则称点
为函数
的“拐点”,可以证明,任何三次函数都有“拐点”,任何三次函数都有对称中心,且“拐点”就是对称中心,请你根据这一结论判断下列命题:
①任意三次函数都关于点
对称:
②存在三次函数
有实数解
,点
为函数
的对称中心;
③存在三次函数有两个及两个以上的对称中心;
④若函数
,则: ![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/cbdd6b14556e4870b23f8c1dcfe4e3ad.png?resizew=373)
其中正确命题的序号为_____ (把所有正确命题的序号都填上).
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/21ac331a5b0e4b30b00b0bfc8770a14a.png?resizew=213)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/60cd76baa3484586a3fab13c0e7d75f7.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/ca5c67acb37e4344aca4776bfadbb516.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/9b22cb4ef676428f863b199d569eff7a.png?resizew=65)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/4aeca168313f4352a09e9371cf7fe4f8.png?resizew=67)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/bed6f27974b441c4901f45d1999f3071.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/4a1972c93ff74273a10d6e3a25e47433.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/ca5c67acb37e4344aca4776bfadbb516.png?resizew=61)
①任意三次函数都关于点
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/86f6c82c145b4959a4570a0ff352e9e1.png?resizew=104)
②存在三次函数
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/9263178288534479a8555ceebddfcf6e.png?resizew=64)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/bed6f27974b441c4901f45d1999f3071.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/4a1972c93ff74273a10d6e3a25e47433.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/ca5c67acb37e4344aca4776bfadbb516.png?resizew=61)
③存在三次函数有两个及两个以上的对称中心;
④若函数
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/6f90ab20b1234a0b8c61bb78c5026c69.png?resizew=155)
![](https://img.xkw.com/dksih/QBM/2013/6/7/1571240628027392/1571240633196544/STEM/cbdd6b14556e4870b23f8c1dcfe4e3ad.png?resizew=373)
其中正确命题的序号为
您最近一年使用:0次
解题方法
5 . 为提升学生用数学知识解决现实生活或其他学科领域中的问题的能力,发展学生数学建模素养,某市面向全市高中学生开展数学建模论文征文活动.对于参加征文活动的每篇论文,由两位评委独立评分,取两位评委评分的平均数作为该篇论文的初评得分.从评委甲和评委乙负责评审的论文中随机抽取10篇,这10篇论文的评分情况如下表所示.
(1)从这
篇论文中随机抽取1篇,求甲、乙两位评委的评分之差的绝对值不超过
的概率;
(2)从这
篇论文中随机抽取3篇,甲、乙两位评委对同一篇论文的评分之差的绝对值不超过
的篇数记为
,求
的分布列及数学期望;
(3)对于序号为
的论文,设评委甲的评分为
,评委乙的评分为
,分别记甲、乙两位评委对这10篇论文评分的平均数为
,
,标准差为
,
,以
作为序号为
的论文的标准化得分.对这10篇论文按照初评得分与标准化得分分别从高到低进行排名,判断序号为2的论文的两种排名结果是否相同?(结论不要求证明)
序号 | 评委甲评分 | 评委乙评分 | 初评得分 |
1 | 67 | 82 | 74.5 |
2 | 80 | 86 | 83 |
3 | 61 | 76 | 68.5 |
4 | 78 | 84 | 81 |
5 | 70 | 85 | 77.5 |
6 | 81 | 83 | 82 |
7 | 84 | 86 | 85 |
8 | 68 | 74 | 71 |
9 | 66 | 77 | 71.5 |
10 | 64 | 82 | 73 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(2)从这
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(3)对于序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2968ea9d16fcf1181908c9790c423336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc00379c7af113543302417b685c7d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80746e5e22851a0f1075374a3c3280ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7a1a659607d4d81c81f4f6545df241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02526771dc5a6d66fb9029bff5eac3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4bf6d5a546594c4176867be0ec896b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356a0eecfd01ef9b7fec91cf600603ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
您最近一年使用:0次
6 . 某种产品的广告支出费用x(单位:万元)与销售量y(单位:万件)之间的对应数据如表所示:
根据表中的数据可得回归直线方程
2.27x
,R2≈0.96,则
①第三个样本点对应的残差
1
②在该回归模型对应的残差图中,残差点比较均匀地分布在倾斜 的带状区域中
③销售量的多少有96%是由广告支出费用引起的
上述结论判断中有一个是错误 的,其序号为 _____________
广告支出费用x | 2.2 | 2.6 | 4.0 | 5.3 | 5.9 |
销售量y | 3.8 | 5.4 | 7.0 | 11.6 | 12.2 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4327541f8ccd5171555d20d74fd1b8cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c746256cb4248b41dd7a61b83dbd03.png)
①第三个样本点对应的残差
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82168f587f74eb68e682b1535e955410.png)
②在该回归模型对应的残差图中,残差点比较均匀地分布在
③销售量的多少有96%是由广告支出费用引起的
上述结论判断中有一个是
您最近一年使用:0次
2023高三·全国·专题练习
7 . 曲线
上不同两点
,
处的切线的斜率分别是
,
,
是两点间距离,定义
为曲线
在点
与点
之间的“曲率”,给出以下命题:
任何曲线上两点
,
之间的曲率
均为正实数;
存在这样的函数,该函数图象上任意两点之间的“曲率”为常数;
抛物线
图象上两点
与
的横坐标分别为
,
,则“曲率”
;
函数
图象上任意两点
,
之间的“曲率”
其中正确命题的序号为________
填上所有正确命题的序号
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76e4da23ca106003878ff1cd67790ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5747788ed1df969a545c85a607b264ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dbc07f69ba98d8fb3d53f5e3a1dc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa245bbcfaa0c17f766ba4169fd1d889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36b353993900a5059dfaabe85314209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2624c21466efbd74de610b1ab25268.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/6e1c9ae241fd78126274c65e17990c88.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/e4e49f6c05e33da8acf63549d83e2d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddcf8bc52b12910cce971e642d39876f.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/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bde0b2e31ae1448b9e83358a4acc203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8b8edd94bc4d5d517ec77e56800e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061876efb764ca9fa050f5a43eec395a.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/7edcf05d1a5c8081fec0484058421eac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de629ae869e25cbd394121fc990d2f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ef244e9cd295656496929fbb46a9a5.png)
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8 . 给出下列结论:①一组数据
的第
百分位数为
;②若随机变量
,且
,则
;③若将一组数据中的每一个数都加上同一个正数
,则其平均数和方差都会发生变化.其中正确说法的序号为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdb1faf12a59889ef07f9aa0e2c2b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f959e5f8d89390f0f136f6acc9f6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7795348ccc99540240f53b5d81a3333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d387ddc97b98af79ddf82cde8f4852b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66161fc8faea9eb09485adafcb5add5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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9 . 如图,矩形
中,
,
为边
的中点,将
沿直线
翻折至
的位置.若
为线段
的中点,在
翻折过程中(
平面
),给出以下结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/75579b14-d042-4f3f-94ed-2310a0e41d23.png?resizew=198)
①存在
,使
;
②三棱锥
体积最大值为
;
③直线
平面
.
则其中正确结论的序号为_________ .(填写所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8588e18e27bfebf7c81c7e3c7efb1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/75579b14-d042-4f3f-94ed-2310a0e41d23.png?resizew=198)
①存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2181c78134c310f746eab44b9124e63b.png)
②三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb79f948d408ab4fb6708bde172c5e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b9f96b8ecc3cb000bb2f030809f225.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c70966a318ef8ecf874257f5c5e5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
则其中正确结论的序号为
您最近一年使用:0次
2023-03-13更新
|
365次组卷
|
3卷引用:宁夏六盘山高级中学2023届高三第一次模拟数学(文)试题
宁夏六盘山高级中学2023届高三第一次模拟数学(文)试题河南省许昌市鄢陵县职业教育中心(升学班)2022-2023学年高二下学期期中考试数学试题(已下线)第15讲 8.6.3平面与平面垂直(第2课时)-【帮课堂】(人教A版2019必修第二册)
10 . “曼哈顿距离”是人脸识别中一种重要的测距方式.其定义如下:设,
是坐标平面内的两点,则A,B两点间的曼哈顿距离为
.在平面直角坐标系中
中,下列说法中正确说法的序号为
①若,
,则
;
②若O为坐标原点,且动点P满足:,则P的轨迹长度为4;
③设是坐标平面内的定点,动点N满足:
,则N的轨迹是以点
,
,
,
为顶点的正方形;
④设,
,
,则动点
构成的平面区域的面积为10.
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