10-11高二下·北京东城·期末
1 . 已知
成等差数列,
成等比数列,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334b44865a0457e405618d61666b3220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c727ff1e25f025f8f3b4b979cef32601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e17b07e135975336cf2d281d775270b.png)
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解题方法
2 . 设函数
的定义域为A,集合
.
(1)若
,求
;
(2)若集合
中恰有一个整数,求实数a的取值范围.
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572389638201344/1572389644263424/STEM/50fee333eb0f42d7ab08e91014841c2c.png)
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572389638201344/1572389644263424/STEM/71296f32591743d582c30c777f2592de.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572389638201344/1572389644263424/STEM/7997e9a9f14048d0acfc6f6f0f41d40a.png)
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572389638201344/1572389644263424/STEM/33c983d410694c6aa6ae2e303280d121.png)
(2)若集合
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572389638201344/1572389644263424/STEM/41922ef7b59f472f89d6874501d5ef7a.png)
您最近一年使用:0次
2016-12-03更新
|
390次组卷
|
2卷引用:2014-2015学年北京市西城区高二下学期期末考试文科数学试卷
解题方法
3 . 函数f(x)的定义域为D,函数g(x)的定义域为E.规定:函数![](https://img.xkw.com/dksih/QBM/2016/3/23/1572554388209664/1572554394329088/STEM/464d15edf4e8485d920b7cf463fbf0f1.png)
(Ⅰ)若函数
,写出函数h(x)的解析式;
(Ⅱ)判断问题(Ⅰ)中函数h(x)在(1,+∞)上的单调性;
(Ⅲ)若g(x)=f(x+α),其中α是常数,且α∈(0,π),请设计一个定义域为R的函数y=f(x),及一个α的值,使得h(x)=cos4x,并给予证明.
![](https://img.xkw.com/dksih/QBM/2016/3/23/1572554388209664/1572554394329088/STEM/464d15edf4e8485d920b7cf463fbf0f1.png)
(Ⅰ)若函数
![](https://img.xkw.com/dksih/QBM/2016/3/23/1572554388209664/1572554394329088/STEM/c1e0d0677e484394b18ff0a3aac4722a.png)
(Ⅱ)判断问题(Ⅰ)中函数h(x)在(1,+∞)上的单调性;
(Ⅲ)若g(x)=f(x+α),其中α是常数,且α∈(0,π),请设计一个定义域为R的函数y=f(x),及一个α的值,使得h(x)=cos4x,并给予证明.
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19-20高三下·北京·阶段练习
4 . 已知
为坐标原点,点
是
轴上的动点,点
是
轴上的动点,且
,动点
满足
.
(1)求动点
的轨迹
的标准方程;
(2)设动直线
与圆
交于
,
两点,且点
,
均不在坐标轴上,若直线
与曲线
有且仅有一个公共点,求直线
与直线
的斜率之积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f12c805c7ffd717cdc9d222a7d06a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6007970233dae8ea5b789d66c5d02a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a983df57f48039f3c03303a8ed2fb543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d81dea7253270468934bb4e52e4fd278.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c283fb57b384c7bbe0911d37eb9cd714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.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/1652145a4785b50fa22fdd8c63f724b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ae18c3151ef1283fbd7854562fdfc3.png)
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5 . 已知集合
,其中
,将
(
)中所有不同值的个数记为L(A).
(I)设集合
,
,求L(P),L(Q);
(II)设集合
,求L(B)的值(用含n的式子表示);
(III)求L(A)的最小值(用含n的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59003c6febf1a45fc85bc475a3a17b8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d228bd157fc934280ecb376cc76f89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059a6c5a965c335b8da05e697da2c7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937c09d82c480e4d67f8a48d3f66c5f5.png)
(I)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d3af4c3f0819aa663ce7f934e0c3623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6c43b274d3f973a0b42c520bf0f26f.png)
(II)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560fdcf8f66442edf34dbdf8b0b63c59.png)
(III)求L(A)的最小值(用含n的式子表示)
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19-20高三下·北京·阶段练习
解题方法
6 . 设集合
、
中的元素均为实数,若
,则称集合
为集合
的“对随集”.
(1)当集合
时,求集合
的“对随集”
;
(2)设集合
的“对随集”为集合
,若
,求集合
;
(3)若对于(2)中的集合
,取集合
中不相等的正整数元素
,使得关于
的方程
有两个不相等的实数根,设有序数对
构成的集合为
,求集合
的子集个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db017125f99041423efc58780c02b47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)当集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32accf422bfe06f1f6b067d6b55d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518ea925a2f556c608a44878ef6c618e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)若对于(2)中的集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5a58b43cff9e96b035312a35a67ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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