1 . 函数
的定义域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a9adff8460c897d079ccf7354dbcd7.png)
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解题方法
2 . 已知十进制九位数
,则所有满足
,
的九位数的个数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b141677a53f3f062307f3d1c58ecdf71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991544df73bffc3e5f97e1ec064f45a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547d9ed90bed240f398d61a797449817.png)
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3 . 已知
满足
,则下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-04-27更新
|
925次组卷
|
6卷引用:浙江省余姚市第四中学2018-2019学年高一下学期第一次比学赶帮超学习竞赛数学试题
4 . 已知函数
,则
的值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da641a7aa7245a4a18bead98c52d7bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae82137924f11e531726e6fbecd0524.png)
A.![]() | B.2 | C.![]() | D.![]() |
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2021-09-07更新
|
237次组卷
|
2卷引用:2020年浙江省温州市摇篮杯高一数学竞赛试题
5 . 如图,
是
的外接圆,
是弧
(不含
)上一点,
为弧
的中点.
为线段
上一点,过
作
的平行线交
于点
,过
作
的平行线交
于点
,过
作
的平行线交弧
于点
.已知
上的点
满足
被
平分.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb882b525043fb4602f598a9dfe5fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c648899641f3e3c6ed9edd5ed9d23389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5135b0b4f25d7f5e0077e4fa33216624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1ec05e3cec27677ded7b4aecaa62d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16729e909baa818afb431558a58011de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/29f939cb-fb8e-452b-a961-f963d2537196.png?resizew=172)
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6 . 某班有10名同学计划在暑假举行若干次聚会,要求每名同学至多参加三次聚会,并且任意两名同学至少在一次聚会中相遇.求最大的正整数
,使得无论如何安排符合上述要求的聚会,都一定存在某次聚会有至少
名同学参加.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 设集合
,
,则集合
中的元素为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591b58167eaf91b2a0e55a904d9ffad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/593441952b0f1050816ff2d8b050f05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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8 . 已知集合
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1faf6a3c2aee48faef9a2cf122e49651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() |
B.![]() |
C.![]() ![]() |
D.![]() ![]() |
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9 . 过抛物线
的焦点
的直线
与抛物线
交于
两点,与其准线交于点
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f6ea51b144994c9fef54e970d28fec.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147378a5bf643f299538fe3d304c4b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f6ea51b144994c9fef54e970d28fec.png)
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2018-02-23更新
|
597次组卷
|
2卷引用:浙江省杭州市学军中学2016-2017学年高一上学期12月竞赛测试(二)数学试题
10 . 已知复数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d05b59b1d2ab28856d187816f4fd13d.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5951b39a2e05bf4ff01aaa111a454b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d05b59b1d2ab28856d187816f4fd13d.png)
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