名校
1 . 有限集合
中的元素个数记作
,设
都为有限集合,则易知:
(1)
.
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8d57cb19078c2268a06f6bdf73f805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b82eba2e437c25fa05913ccbc2d8474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87d55a412b5418ef2f87e8f9dad5662.png)
问(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0580398bb9f6945d7ac664fb5ecb0180.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0496011eda2d13aeb76196b2068e104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9eeaf7014c46d9cf4ebac51c3e25d85.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8d57cb19078c2268a06f6bdf73f805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b82eba2e437c25fa05913ccbc2d8474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87d55a412b5418ef2f87e8f9dad5662.png)
问(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0580398bb9f6945d7ac664fb5ecb0180.png)
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名校
解题方法
2 . 已知函数
的定义域
,值域
且
,
,则实数
的取值范围是:____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db256ebaab320123342bdb85c7367365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a6cf94254cdbe44455457d2176c203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9b9408f8b8af3819088d6a5898c4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c52ced66c11e585e43a32d72b8797860.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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3 . 已知集合
,集合
满足
,则集合
有______________ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f1431bca7e0baac283abc1974afe4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf58a2e56b07d10221185f79823740e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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4 . 设
,则命题
:
,命题:
:
,则
是
的______ 条件.(填“充要”“充分不必要”“必要不充分”“既不充分又不必要”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90305a582a8eb9167869e7a774b8974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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5 . 设
,若
是
的必要不充分条件,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f614f2243b909a03eb03946ae2d3f038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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6 . 已知复数
,
,则“
”是“
为纯虚数”的______ 条件.(填写“充要”、“充分不必要”、“必要不充分”、“既不充分也不必要”中的一个)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60c9f27578104112da07fac38dd6686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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7 . 写出命题“若方程
的两根均大于
,则
”的一个等价命题是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd6a84d994f86ef1e060e1b1183eeca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f2e8b5365c2f086a02e5dd3c3bd116.png)
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8 . 已知命题“若
,则
”的否命题为真命题,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c79ae985fa28a44328d6049c906ebef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec0345ad2eb83035986f0ad4d3abaa44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 . 已知集合
,若
,则满足条件的
集合有______ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89abba33457d3d484aabf4d7187bd019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4afc1abd4f96a968842e3c7613e6653e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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10 . 已知集合
,
,则“
”是“
”的_____________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5274c80d5e1e377eb1c8996af7e3fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2525420d4e8c6e9d4dee1f3a8d9ca87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
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2020-12-05更新
|
256次组卷
|
2卷引用:四川省成都市第七中学2020-2021学年高三期中数学(文)试题