1 . 给定集合
和定义域为
的函数
,如果对于任意
、
及
均成立
,则称函数
是“
关联”的.对于下列两个命题:
①若
是“
关联”的,则
一定是“
关联”的(
为正整数);
②若
是“
关联”的(
、
为正整数),则
一定是“
关联”的.判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33890c6b0bf167514d44139d9dca0154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4f57099600b733e9db7ecaf8b877b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590c4adcd16727c3d0ec27e4f1c77025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6170ed4a10e57487d525e71610dff82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dacbee697756e1869b693e55d7e9d3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265ae7f9de1c743deccdf2d30359da21.png)
A.①、②都是真命题 | B.①、②都是假命题 |
C.①真命题,②是假命题 | D.①是假命题,②是真命题 |
您最近一年使用:0次
名校
2 . 以下给出五个命题,其中真命题的序号为______
①函数
在区间
上存在一个零点,则
的取值范围是
或
;
②“任意菱形的对角线一定相等”的否定是“菱形的对角线一定不相等”;
③
,
;
④若
,则
;
⑤“
”是“
成等比数列”的充分不必要条件.
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c95f079838b4c0d5fa76320bc4f39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002ad1638f25e355d70d5ab63e637f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e66b0aa8972c797c9f3ddccdd4fdd5.png)
②“任意菱形的对角线一定相等”的否定是“菱形的对角线一定不相等”;
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb6324528c9fe1e0ae58bf993e9c9d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ad117157c07abdef9baf890ccc90f8.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1b5f665d41a2d0e4980b35c1b6e578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c855dfd821bdda47ea3acdd3bac48e0.png)
⑤“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988b7e964e313579ab8869d67d5be007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
您最近一年使用:0次
3 . 在平面直角坐标系中,定义两点
与
之间的“直角距离”为:
现给出下列4个命题:
①已知
则
为定值;
②已知
三点不共线,则必有
;
③用
表示
两点之间的距离,则
;
④若
是椭圆
上的任意两点,则
的最大值6.
则下列判断正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95256de0a3744ef0eb8dc17a3f60842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27bd43bc4af1e3b28d0de0cc561b879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093b0426ad1da8380c661659b8b01a03.png)
①已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f619b3fec6e00752c391678fd7cb049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82923ea5d3a0b7bc6a2c529959324b0d.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ae384fc7590ccd8ce26562fdd03288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0079c6427b97f21116c77a2562e36cb.png)
③用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603b5793e7dd0ecfa7d89216c25d96ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11aa56147361e68eba3c506c340d4888.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82766cfd2b7c59c7fac5b827ae5863b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82923ea5d3a0b7bc6a2c529959324b0d.png)
则下列判断正确的为( )
A.命题①,②均为真命题 | B.命题②,③均为假命题 |
C.命题②,④均为假命题 | D.命题①,③,④均为真命题 |
您最近一年使用:0次
2020-02-03更新
|
524次组卷
|
4卷引用:2016届上海市虹口区高三5月模拟(三模)(文)数学试题
2016届上海市虹口区高三5月模拟(三模)(文)数学试题2016届上海市虹口区高三5月模拟(三模)(理)数学试题2016届上海市虹口区高考三模(理科)数学试题(已下线)专题1-2 简易逻辑题型归类-1
4 . 设函数
的极值点从小到大依次为
,若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c728e1cb236050859914e7053347736.png)
,则下列命题中正确的个数有( )
①数列
为单调递增数列
②数列
为单调递减数列
③存在常数
,使得对任意正实数
,总存在
,当
时,恒有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03809f185f08f8156f8ead72e534c91.png)
④存在常数
,使得对任意正实数
,总存在
,当
时,恒有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488d3950638822de3602a1a48a1dd225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18679c9696d863829e3d2814b4b6752f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888c57f76a250a05e64d57f89a90ae63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d3db5570a5ab31ff7468c0d64d0f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c728e1cb236050859914e7053347736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3247e66546907b0beb0d5946ae2acaa0.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
③存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b8e5990ef4ef314941a3154457a9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a476b12fcc95f885197ec48c45cfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591c10d6af25780ba5bfcd82f2cb366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03809f185f08f8156f8ead72e534c91.png)
④存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cefeddff52b02a43831beeb4bb6faa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a476b12fcc95f885197ec48c45cfeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591c10d6af25780ba5bfcd82f2cb366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488d3950638822de3602a1a48a1dd225.png)
A.4个 | B.3个 | C.2个 | D.1个 |
您最近一年使用:0次
5 . 下列四个命题:
①若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc78a2a13f68847650e82eaffbe751e.png)
②函数
,的最小值是3
③用长为
的铁丝围成--个平行四边形,则该平行四边形能够被直径为
的圆形纸片完全覆盖
④已知正实数
,
满足
,则
的最小值为
.
其中所有正确命题的序号是__________ .
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f287d528432c4a7c3f2e14f8a18db00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc78a2a13f68847650e82eaffbe751e.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009926beaa372ddb8db8bf15230aa0ec.png)
③用长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b400d0f1815cb5953b1221ce690caef4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
④已知正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a55718d79ff2c0c1b2d9d0ec141ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43e2a189e3c9697916b63566cfcab66.png)
其中所有正确命题的序号是
您最近一年使用:0次
名校
6 . 对于函数
现有下列结论:
①任取
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b27d9aafc2de07ff3506cadf89c420f.png)
②函数
在
上单调递增
③函数
有
个零点
④若关于
的方程
恰有
个不同的实根
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9145e7bebf14b87e0ef3d0309c1c6eb1.png)
其中正确结论的序号为________________ .(写出所有正确命题的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e88abcc6e4b6381edaba959ee4b3286.png)
①任取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a62b2963a3941525b41bc7a33e2a066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b27d9aafc2de07ff3506cadf89c420f.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd2993f6583edb4693a760f3f276a66.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6647ff4260f63b1d2a0c74c31bb69030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
④若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b647bef81d6e219c508eca1517d9342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9145e7bebf14b87e0ef3d0309c1c6eb1.png)
其中正确结论的序号为
您最近一年使用:0次
2020-04-09更新
|
496次组卷
|
2卷引用:黑龙江省哈尔滨三中2017-2018学年高三上学期期中考试理科数学试题
9-10高二下·福建龙岩·期中
名校
7 . 对于直角坐标平面内的任意两点
,定义它们之间的一种“距离”:
.给出下列三个命题:
①若点
在线段
上,则
;
②在
中,若
,则
;
③在
中,
,其中真命题的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442f62c56dc469e6f50dd603327d1211.png)
①若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e90a3f567890fe46860ca45c5bc5c7.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69550d878381f6e8fb436e88638f070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c812f6b90a64913c41738ce990b7afdc.png)
③在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7b8c13ab91cf9f1c42dbff7a272a5c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-04-04更新
|
906次组卷
|
10卷引用:2010年福建省上杭一中高二第二学期半期考试数学(理科)试题
(已下线)2010年福建省上杭一中高二第二学期半期考试数学(理科)试题(已下线)2012-2013年山东济宁泗水一中高二12月质量检测理科数学试卷(已下线)2012-2013学年山东省济宁市高二上学期期末理科数学(已下线)2013届广东省广宁县广宁中学高三2月月考理科数学试卷2015-2016学年广东省英德市一中高二上学期第一次月考理科数学试卷北京市北京八中2018届高三第二次月考数学理科试题上海市杨思高级中学2020-2021学年高一上学期期中数学试题人教B版(2019) 选修第一册 过关检测 第二章 2.1坐标法上海市上海交通大学附属中学2022届高三下学期期中数学试题(已下线)专题01 集合与不等式必考题型分类训练-3
8 . 数学中有许多形状优美、寓意美好的曲线,曲线
就是其中之一(如图).给出下列三个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/f13fa3d8-e912-4901-86ee-acb890ad8c24.png?resizew=127)
①曲线
恰好经过6个整点(即横、纵坐标均为整数的点);
②曲线
上存在到原点的距离超过
的点;
③曲线
所围成的“心形”区域的面积小于3.
其中,所有错误结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be606997371a16232ed907b4611df14.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/f13fa3d8-e912-4901-86ee-acb890ad8c24.png?resizew=127)
①曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
③曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
其中,所有错误结论的序号是
您最近一年使用:0次
2020-05-15更新
|
504次组卷
|
2卷引用:2020届吉林省延边州高三下学期4月教学质量检测数学(理)试题
解题方法
9 . 已知函数
(
且a为常数)和
(
且k为常数),有以下命题:①当
时,函数
没有零点;②当
时,若
恰有3个不同的零点
,则
;③对任意的
,总存在实数
,使得
有4个不同的零点
,且
成等比数列.其中的真命题是_____ (写出所有真命题的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997aca47e77b0aa0230f881d4a37a1a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d3d7b48ea2c4a0c74ebfb263c4eeb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a4eaa80b44625890339d6a0065c241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4d3d9cd45cd44d30ca8390304a1652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceee16e55109607bdab345184fe61707.png)
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名校
10 . 给出下列说法:①方程
表示的图形是一个点;②命题“若
,则
或
”为真命题;③已知双曲线
的左右焦点分别为
,
,过右焦点
被双曲线截得的弦长为4的直线有3条;④已知椭圆
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
上有两点
,
,若点
是椭圆
上任意一点,且
,直线
,
的斜率分别为
,
,则
为定值
;⑤已知命题“
,
满足
,
”是真命题,则实数
.其中说法正确的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8223571655fb5d3034461f039087c0e7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561800aa679a45da4dbe0e323de1fd59.png)
您最近一年使用:0次
2019-11-21更新
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657次组卷
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2卷引用:四川省蓉城名校联盟2019-2020学年高二上学期期中联考数学(理)试题