1 . 设集合
,
,则“
”是“
”的必要不充分条件. ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043f3f5b5238b377373c4ab58be2fec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe123448fb2e5be04204cd98f64097e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
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2 . 设a,
,则“
”是“
且
”的必要不充分条件.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40bbcaa8b5200d9126aedd76d02e721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7700c3577cd8febdf136ca5984c4ea81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030a328f9a72e0a59f5a48a3cb4e7289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b89b579e5a5aff297e30bd5682bf00.png)
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3 . 已知集合
,
,若
,则
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316a92a24c61a397758b9a07845e0190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c933858983a9a2a8ec21d11847f08fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb3c85d24c23c56b4c9c47d7cb55a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6d79383c6503e1817378347afc66ee.png)
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解题方法
4 . 已知全集为R,集合
,
,并且
,则
的取值范围是
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1274769dd8c0986e30bb0d370836c357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df98e6c360f2a2edf35d2d7319b2ed7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fec5797aae117f0e0d6da987cf3377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a271fbe1d978a7a1d25d4b38cae7615d.png)
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5 . 设集合
,
,则
. ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65609aeddfedf114cf6889b9c0a36d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff583135251bcd8f405c6cec198f6243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25029c10c11e7ef0bc6bea67ba524a13.png)
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6 . 判断(正确的打“√”,错误的打“×”)
(1)
是一元二次不等式.( )
(2)若
,则一元二次不等式
无解.( )
(3)
为一元二次不等式.( )
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111a44c549b2381f1603bfad76eb1365.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f585b046b10267a4bcf295a76473a4dc.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb35914fad2a4287d245599dd987e179.png)
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名校
7 . 对每小题的命题作出判断,对的选A,错的选B.
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675d3f26f4963eab36883be9f15e8751.png)
_________ .
②{正四棱柱}{直四棱柱}_________ .
③直线
的倾斜角为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4c5016bd1fc6582078299b9cf8b392.png)
_________ .
④若
,则
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2355d95f840205994191fe33d81ae8a0.png)
_________ .
⑤若
,
,
,…,
的平均数为2,则
,
,
,…,
的平均数为4_________ .
⑥在等比数列
中,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6c2e49c873187b12e90a7b4d5d906b.png)
_________ .
⑦![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0697cd7e029dcdff12fe124eca8ff514.png)
_________ .
⑧已知
,
,则“
”“
,且
”_________ .
⑨若直线
与直线
垂直,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb43aa7080bb89cf86b7412c119a05b.png)
_________ .
⑩从0,1,2,3,4中任取3个数,组成没有重复数字的三位数的个数为60_________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675d3f26f4963eab36883be9f15e8751.png)
②{正四棱柱}{直四棱柱}
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfab8f6aaf05b1db2db85b60362f3047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4c5016bd1fc6582078299b9cf8b392.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce128ff2555b5cbc75f5b6ef695b8e7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c9329062a15f1f77c7b268bcbc517f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2355d95f840205994191fe33d81ae8a0.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64b64a52252e4bd1651317bb0401cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03dcc845b4868ba3086b9b08c3db05a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10147405714c2ac53f64f67139f8c57a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6158193a6c73f9cdea630e93611e38.png)
⑥在等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a37c2ec7c09f42c1a255cf19057f8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6c2e49c873187b12e90a7b4d5d906b.png)
⑦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0697cd7e029dcdff12fe124eca8ff514.png)
⑧已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e076b91a9178217532e11c496400e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe920cd78db25f5b4df37d066e57800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1feff13fa9a17b5e44abd0c8b7f22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca82c43a2facd54b24550951a77abf3.png)
⑨若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df5f937b8c0c486d2d6672e540794e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5375e9cb3d83b66bba64998de3ad01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb43aa7080bb89cf86b7412c119a05b.png)
⑩从0,1,2,3,4中任取3个数,组成没有重复数字的三位数的个数为60
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8 . 判断下列命题是否正确.(正确的打“√”,错误的打“×”)
(1)分类变量中的变量与函数中的变量是同一概念.( )
(2)列联表频率分析法、等高条形图可初步分析两分类变量是否有关系, 而独立性检验中
取值则可通过统计表从数据上说明两分类变量的相关性的大小.( )
(3)独立性检验的方法就是反证法.( )
(1)分类变量中的变量与函数中的变量是同一概念.
(2)列联表频率分析法、等高条形图可初步分析两分类变量是否有关系, 而独立性检验中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2581192317ef233ccdccfc48ac29b52b.png)
(3)独立性检验的方法就是反证法.
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