2010·黑龙江哈尔滨·一模
解题方法
1 . 已知圆
与圆
,在下列说法中:
①对于任意的
,圆
与圆
始终相切;
②对于任意的
,圆
与圆
始终有四条公切线;
③当
时,圆
被直线
截得的弦长为
;
④
分别为圆
与圆
上的动点,则
的最大值为4.
其中正确命题的序号为______ .
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/931d726a0d4841ae9b1c03168c628d0a.png?resizew=220)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/5635d69a619847ba9aaf57794e9012c0.png?resizew=91)
①对于任意的
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/8369f20c30374e03a6b13f5d8f948a15.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/bdbc8b7398634450a3ff71a521b58b72.png?resizew=20)
②对于任意的
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/8369f20c30374e03a6b13f5d8f948a15.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/bdbc8b7398634450a3ff71a521b58b72.png?resizew=20)
③当
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/508345b0c6764b6d9d64ccd1991cf101.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/f15d3415524749a3ad5ff841d4133fd6.png?resizew=105)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/d6b1859244b4448a8674dc717d67ed9a.png?resizew=23)
④
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/02dccdc836cd4166996e9f20863e52e3.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/da9f02d104994c8485f6d4b5cd086f65.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/bdbc8b7398634450a3ff71a521b58b72.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1576715455873024/1576715601297408/STEM/67ece29fd5b54627952aefe0fdad7421.png?resizew=35)
其中正确命题的序号为
您最近一年使用:0次
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2 . 以下命题错误的序号为( )
①
与
是两条不同的直线,则“
”是“
”的充分不必要条件;
②若“
”是真命题,则“
”一定是假命题;
③荀子曰:不积跬步,无以至千里,不积小流,无以成江海.这说明“积跬步”是“至千里”的充分条件;
④“
”是“
为奇函数”的充要条件.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ffcf966fb0d99555aa3862f933ba14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37c9888b01053e656d567cc2c1dc759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e03566282ef39ad17821036f228174.png)
②若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e48ebdd742cb5d310c21a384d599bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6777065ed14d76944be5cb45d9e2c76.png)
③荀子曰:不积跬步,无以至千里,不积小流,无以成江海.这说明“积跬步”是“至千里”的充分条件;
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104375baf5cef5eb92cfc7cf13b80193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.①③④ | B.①② | C.③④ | D.①④ |
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解题方法
3 . 已知
,若
分别是方程
的根,则下列说法正确的序号为_____________ .
①
; ②
; ③
; ④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580e60deee78dc56c9d3e7d0e11d27ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e04b5adbacc3b717b716eecdefe01d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948eb26dc27646285335664baad48ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90b02a401d8c60385803dea37807f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ee6ad5e606a5eb687e5d68fefc75ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972126748d2b32b94a1af7fe36af6dad.png)
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4 . 设
,
是两条不同的直线,
,
是两个不同的平面,有下列四个命题:
①若
,
,则
;
②若
,
,
,则
;
③若
,
,
,
,则
;
④若
,
,
,则
.
其中正确命题的序号为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b610e3c5b3d78a5730e7f3d736ac28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a4c549e7ea8776ec821c467bc1a913.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d6ca6fed060a95127579051f7a6b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80645381feb9746cc149da61d553974a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a042a14e1c3c915ad11544c9e1e57da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc01d7aa51bf4f95c4b12ae9dcb7eb4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d6ca6fed060a95127579051f7a6b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d6ca6fed060a95127579051f7a6b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
其中正确命题的序号为
您最近一年使用:0次
2021-05-07更新
|
269次组卷
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3卷引用:黑龙江省哈尔滨市第六中学2021届高三二模数学(理科)试题
名校
解题方法
5 . 下列说法不正确的是( )
A.甲、乙、丙三种个体按![]() |
B.设一组样本数据![]() ![]() ![]() ![]() ![]() ![]() |
C.在一个![]() ![]() ![]() |
D.已知随机变量![]() ![]() ![]() |
您最近一年使用:0次
2023-06-03更新
|
1432次组卷
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3卷引用:黑龙江省哈尔滨市第三中学校2023届高三第五次模拟考试数学试题
6 . 给出下列四个结论:
(1)如图
中,
,
,
.
是斜边
上的点,
.以
为起点任作一条射线
交
于
点,则
点落在线段
上的概率是
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/f011ae2d-d883-4983-9fc4-52e6978666a9.png?resizew=221)
(2)设某大学的女生体重
与身高
具有线性相关关系,根据一组样本数据
,
,2,
,
,用最小二乘法建立的线性回归方程为
,则若该大学某女生身高增加
,则其体重约增加
;
(3)若
是定义在
上的奇函数,且满足
,则函数
的图象关于
对称;
(4)已知随机变量
服从正态分布
,
,则
.
其中正确结论的序号为________________
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10cbd78bbf6c9c57d68e805dbddb64c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e744f480e11f588570c5d6738799f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8cfe5c37d1d3c4f34af28dcf9be6392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/f011ae2d-d883-4983-9fc4-52e6978666a9.png?resizew=221)
(2)设某大学的女生体重
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9ba38a31c1aa6827df859474a35d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be6e964c405a9cdf6623f9219898fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fc74ce304baf34786c30b0ec85d53a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd122df0d49f82aff25d5d00c14053e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713ac1eb0d8cce55d51e62ef4a2b1634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b6db78ff747b071964f0790a2e64b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac85e2ed257d4f9be52a776c29f6ca67.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78132753bd0d62932f7ff62a7046f7ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(4)已知随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d04b28e5ef8671c6afd89b8e0dbe52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65ba04ecaea00e54f550685f61d9a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7bdf344ebd7cd1bb3faef18e023938a.png)
其中正确结论的序号为
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2016-12-03更新
|
355次组卷
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2卷引用:2015届黑龙江省哈尔滨六中高三下学期第三次模拟理科数学试卷
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7 . 甲、乙、丙三个同学同时做标号为
、
、
的三个题,甲做对了两个题,乙做对了两个题,丙做对了两个题,则下面说法正确的是_____ .
(1)三个题都有人做对;(2)至少有一个题三个人都做对;(3)至少有两个题有两个人都做对.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
(1)三个题都有人做对;(2)至少有一个题三个人都做对;(3)至少有两个题有两个人都做对.
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2019-03-08更新
|
855次组卷
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6卷引用:【全国百强校】黑龙江省哈尔滨三中2019届高三高考二模试卷数学(文科)试题
【全国百强校】黑龙江省哈尔滨三中2019届高三高考二模试卷数学(文科)试题黑龙江省哈尔滨市第六中学2019届高三第三次模拟考试数学(文)试题【市级联考】黑龙江省齐齐哈尔市2019届高三第一次模拟考试(3月) 数学(文)试题2020届宁夏六盘山高级中学高三第三次模拟考试数学(文)试题新疆奎屯市第一高级中学2018-2019学年高二下学期期末考试数学(文)试题(已下线)第二章 推理与证明(能力提升)-2020-2021学年高二数学单元测试定心卷(人教版选修2-2)