1 . 若无穷数列
满足:
是正实数,当
时,
,则称
是“
数列”.
(1)若
是“
数列”且
,写出
的所有可能值;
(2)设
是“
数列”,证明:
是等差数列的充分必要条件是
单调递减;
(3)若
是“
数列”且是周期数列(即存在正整数
,使得对任意正整数
,都有
,求集合
的元素个数的所有可能取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6613aad9970700c7c418042abc9147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88451d13d3ffed895c72a882b6e96541.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88451d13d3ffed895c72a882b6e96541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88451d13d3ffed895c72a882b6e96541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88451d13d3ffed895c72a882b6e96541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f2f8851746bfd1d4cb5b086198e85d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/221f9f74bfc9ab5638748dd2346ec244.png)
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2 . 1.设数集A由实数构成,且满足:若x∈A(x≠1且x≠0),则
∈A.
(1)集合A是否为双元素集,并说明理由;
(2)若3∈A,A中元素个数不超过10个,且A中有一个元素的平方等于所有元素的积,求集合A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ccc91de52641ad13f3ba1711e8b5e6.png)
(1)集合A是否为双元素集,并说明理由;
(2)若3∈A,A中元素个数不超过10个,且A中有一个元素的平方等于所有元素的积,求集合A.
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2021高一上·江苏·专题练习
解题方法
3 . 已知集合
中两个元素的立方和、和分别是9和3,
,
,且有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf8a69410dc2c6874b5b73a165eda90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30490e284fcc494518152fe92efc6e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b7b4c075f3d0c7bfd9121d538fa0b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c3a88a311889888a4bdc9c658c0d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98e93cb749a01267e43b1e597543ec7.png)
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4 . 已知方程
.
(1)若方程的解集只有一个元素,求实数a,b满足的关系式;
(2)若方程的解集有两个元素分别为1,3,求实数a,b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1146110d4382c714c10de00dd1273b7f.png)
(1)若方程的解集只有一个元素,求实数a,b满足的关系式;
(2)若方程的解集有两个元素分别为1,3,求实数a,b的值.
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5 . 已知数集
具有性质
对任意的
,使得
成立.
(1)分别判断数集
与
是否具有性质
,并说明理由;
(2)求证:
;
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a945d5c82f5ef35c26329adedc262b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/569675dd7b2aca2732324f4bea5c02e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe0562ef02aa73dae7c6f051998778a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1e76d1341e8e6bd89b7075150536bd.png)
(1)分别判断数集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e9517ef8cc3a67799757b5829b2138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2edaea4c05555132c294e3f99bcbc82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3872d370415bde3998d207d64febcb43.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4af063ed97c69c5224d4152d0083ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2017-08-19更新
|
1075次组卷
|
5卷引用:江苏省南京师范大学附属中学2017届高三高考模拟一数学试题
解题方法
6 . 设全集
,函数
的定义域为集合
,集合
.
(1)若
,求
,
;
(2)若
C UB,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe1c89446268e2ee730287545ee2a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed9151de134c33218b47fa6c138f10b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b21a52ba554a8f2b89ab6f1e3d012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d259db9bb0e132881e875a77d324057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8489e291d540e36c33cd17b037c1e9cf.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572321836351488/1572321841782784/STEM/8351d702ce2e419abcd9e6824c38edfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . (本小题满分12分,(Ⅰ)小问6分,(Ⅱ)小问6分)
设
,集合
,
.
(Ⅰ)若
且
,求实数P的取值范围;
(Ⅱ)若
,求B.
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea2fdda67d2a98caafce60658a57c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faaabeffeec374b994ecf338512399e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ffff6558ada3285cc39b7abc2a3dc.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa9bf65189dfb57a61644a1cb27f361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0442ed22aeff243c857e36709fc078.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f9494fc40817f25b34662a1f12d9f3.png)
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