1 . 某年级先后举行数理化三科竞赛,学生中至少参加一科的:数学203人,物理179人,化学165人;参加两科的:数学、物理143人,数学、化学116人,物理、化学97人;三科都参加的有90人.求参加竞赛的学生总人数是__________ .
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2 . 下列集合中,表示方程组
的解集的是__________ .
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53fa58919c15e77232dd3132cffb2db.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f69c477cdcb997f50c0177cf55c4534a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91be651ad5f7712fbefd41414431a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c87e04e9643ced3cf3d347df0a73ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f3938afdef312e5aefd78414f3ac92.png)
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解题方法
3 . 若关于
的方程
的两个实数根
,
,集合
,
,
,
,则关于
的不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f230deee251f0ccff0b421b6ab650ce.png)
![](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/57ecff12d8a212b2eab4608492065224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea37182a691ab32f621f9357f003e6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320bacea0d7ca0c96652ce537e9b7c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a98f56813c3ea95d8c7fc0472715b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-10-18更新
|
193次组卷
|
2卷引用:天津市南开中学2023-2024学年高一上学期第一次学情调查数学试题
名校
4 . 设全集为R,集合
,
,
.
(1)求
,
,
;
(2)若
, 求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2e4dbc5d2ce3af69df0d30de4fa385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe628b19e164e0b2c1da2117824ca46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa60e7fd65d8914157f3d054eea2f8f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb17a2a90cd479b604258d1258e9636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6f21ff6e69a14998bf5f2cbb0292ec.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29cd450d0feaea9acb27a60430f4a3c.png)
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2023-10-18更新
|
285次组卷
|
2卷引用:天津市南开中学2023-2024学年高一上学期第一次学情调查数学试题
名校
5 . 设全集
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ccaf2fb1174d9314c3e9b07846059c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052657a338d77f412173ee766b3c5521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715476727accc3c6b3c71f2f25c3aaad.png)
A.![]() | B.![]() |
C. ![]() ![]() | D. ![]() ![]() |
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6 . 若“
”是“
”的必要不充分条件,则a的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef99608dd5bee4bfb83494af9912f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8bbcb7de75ab439155641ac29d12f0.png)
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2023-10-17更新
|
253次组卷
|
2卷引用:天津市滨海新区塘沽第一中学2023-2024学年高一上学期11月期中数学试题
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7 . 已知集合
,集合
,
.
(1)当
时,求:①
;②
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a23867f91a208cece015cf9d3b3013b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6040e5d9799d3e2a6e305a2185b78d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860ebb6f76cd3cb9a265dfc233002a13.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a427e428f4e2bed83753c4b1460068bd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-10-16更新
|
441次组卷
|
2卷引用:天津市滨海新区塘沽第一中学2023-2024学年高一上学期第一次月考数学试题
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解题方法
8 . 已知集合
,
,若
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0879a1003d5e7f5bb91be1ea5a15e0d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5143b49b1934ffbae93c0d5dd02ad50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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9 . 集合
可以用列举法表示为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a98dc0bafd4144b89726433bf5711e.png)
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10 . 已知集合
. 若
,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff96d8182fe8bfc118ebd90ba127ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次