名校
1 . 已知
三点不共线,
是
内的一点,若
,则
是
的__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ac635031b68a566371e71e193d84e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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2017-03-15更新
|
1601次组卷
|
3卷引用:2015-2016学年河北省石家庄市辛集中学高一下学期综合练习(一)数学试卷
2 . 非零向量
的夹角为
,且满足
,向量组
由一个
和两个
排列而成,向量组
由两个
和一个
排列而成,若
所有可能值中的最小值为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614bfaa3b1ae597cfd95e011a332fa44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](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/350db0e4b2b7d1e32962028e391d9fba.png)
![](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/a63bbbcc9b596143f09c9014f1ea0bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4109624298445d701d51e960e20f43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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2017-03-13更新
|
120次组卷
|
2卷引用:2017届河北省石家庄市高三第二次质量检测数学(文)试卷
名校
3 . 圆
的切线与椭圆
交于两点
分别以
为切点的
的切线交于点
,则点
的轨迹方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2017-03-11更新
|
1601次组卷
|
4卷引用:2017届河北省衡水中学高三下学期二调考试数学(文)试卷
名校
4 . 已知是定义在
上的函数,且满足①
;②曲线
关于点
对称;③当
时,
,若
在
上有5个零点,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff152387cadb0a328cafa4954e5eb61a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b727eb9da56be079445321cf61cf26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e28bd8263d07e6693e5e4d27e16078a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0216e84b418ea84a77a9bad80418ba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835eec12ec99561a3655c296570d75be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2017-03-11更新
|
1708次组卷
|
2卷引用:2017届河北省衡水中学高三下学期二调考试数学(理)试卷
名校
5 . 若直线
过点
,则
的最小值等于__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f01d7456ffc46ebad4911db2868dd0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145d7de5ca50f9a9771e99aba1258991.png)
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2017-03-03更新
|
1695次组卷
|
3卷引用:河北省定州中学2017-2018学年高二上学期期中考试数学试题
名校
6 . 定义在
上的连续函数
满足
,且
在
上的导函数
,则不等式
的解集为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92db09b87d1636b110c8e15232bef117.png)
![](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/a6da8310a7d8087ca4ab10dc5054c45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c67e9a0ddb89071ea94b00a2f82cd0.png)
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2017-02-26更新
|
1101次组卷
|
6卷引用:2016-2017学年河北省定州市高二上学期期末考试理数试卷
名校
7 . 如果曲线
与曲线
恰好有两个不同的公共点,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e68e188f42a328fa205cb6c99ce23f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe88e09a638bdb5f7930ec62f41eb9e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2017-02-23更新
|
1288次组卷
|
3卷引用:河北省定州中学2016-2017学年高一(承智班)下学期期末考试数学试题
8 . 在正方体
中(如图),已知点
在直线
上运动,则下列四个命题:
①三棱锥
的体积不变;
②直线
与平面
所成的角的大小不变;
③二面角
的大小不变;
④
是平面
上到点
和
距离相等的点,则
点的轨迹是直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
其中真命题的编号是__________ .(写出所有真命题的编号)
![](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)
①三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad99ef5e70de37345c708b758d545f.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7977ab975efa6411cc17de39be70d9.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
其中真命题的编号是
您最近一年使用:0次
2017-02-23更新
|
1089次组卷
|
8卷引用:河北省衡水中学2016-2017学年高一下学期期中考试数学(理)试题
河北省衡水中学2016-2017学年高一下学期期中考试数学(理)试题2016-2017学年浙江省名校协作体高二下学期考试数学试卷黑龙江省佳木斯市第一中学2016-2017学年高一下学期期末考试数学试题浙江省杭州市名校协作体2016-2017学年高二下学期月考数学试题安徽省芜湖市第一中学2020-2021学年高二上学期10月第二轮月考理科数学试题(已下线)微专题13 轻松搞定立体几何的轨迹问题(已下线)结业测试卷(范围:第六、七、八章)(提高篇)-【寒假预科讲义】(人教A版2019必修第二册)(已下线)重难点专题11 轻松搞定立体几何的轨迹问题-【帮课堂】(苏教版2019必修第二册)
名校
9 . 已知实数
,
满足
,实数
,
满足
,则
的最小值为__________ .
![](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/9b497ed4e4f2d41925e90f72576dca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9865e8729af99531d5e3091deaf14940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e159c8203722a3c50784f7f6e65911e2.png)
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2017-02-21更新
|
888次组卷
|
7卷引用:2017届河北省衡水中学高三上学期六调数学(文)试卷
解题方法
10 . 设
与
是定义在同一区间
上的两个函数,若
使得
,则称
和
是
上的“接近函数”,
称为“接近区间”;若
,都有
,则称
和
是
上的“远离函数”,
称为“远离区间”.给出以下命题:
①
与
是
上的“接近函数”;
②
与
的一个“远离区间”可以是
;
③
和
是
上的“接近函数”,则
;
④若
与
(
是自然对数的底数)是
上的“远离函数”,则
.其中的真命题有____________ .(写出所有真命题的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c42ef103bbb40a9c414ba273a16fa32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6c310dc168cf97b655bfd1468f2339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1da2db85b44ae9ced8c09cd19593e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69639c663946ff2a26bf5cfc8a08e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04beea76c59a6c5b096d8c5a3b77f8a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548a765a2b7d9851fb0d00cb33f99af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40baa1591d38c33c415a42e8b05264a5.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c852e7eacbadcfa5a92e701d10d790d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2197038d74821f5151b6d513048a5a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44284ff1ea50429a0610e13363be6080.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5b209b8245eddf994aa8409043237a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ae192f1fe4944dec138f44957f387d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df93cc910fc0ad5ce47aacf53ecd70a9.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ba26de399e0344640032046bd79b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080e15f102f9e1f5a2692a337e3e3bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc45ac6a1ed9f497c6580b1154a4f60a.png)
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