名校
解题方法
1 . 已知函数
是定义在
上的奇函数.
(1)求实数
的值;
(2)判断
在定义域上的单调性,并用单调性定义证明;
(3)
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cbc2ed4bad6431037602fc427e6756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5667bc1ea875422f618529aa5f254f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e9b1365d76a10c212db1c91c5f91f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
2 . 命题“
,
”的否定为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8645952ea14b25443f411d39bdec641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6af0ef4759a6e20e172e843a165669d2.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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名校
解题方法
3 . 某校工会为弘扬体育精神推动乒乓球运动的发展,现组织
、
两团体运动员进行比赛.其中
团体的运动员3名,其中种子选手2名;
团体的运动员5名,其中种子选手
名.从这8名运动员中随机选择4人参加比赛.
(1)已知
,若选出的4名运动员中恰有2名种子选手,求这2名种子选手来自团体
的概率;
(2)已知
,设
为选出的4人中种子选手的人数,求随机变量
的分布列及其期望.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff08619204eb9c2f86652bb54fc57eb.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
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名校
解题方法
4 . 已知集合
,
.
(1)当
时,求
;
(2)若命题“
”是命题“
”的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5941603c5ef7b427dee503e306b8d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88c3f39e11bd502fa0a1217726d49cd.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
5 . 已知函数
.若函数
对一切
均成立,则实数
的取值范围______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f207d545352a63e27d8b4dd729f04f66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a8a9f4f0d6590de86becb733bd1b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb005769d5478c56fc5a01d824167d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . “
”表示不大于
的最大整数,例如:
,
,
.下列关于
的性质的叙述中,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ddcf99e3e613fd8c8076f7b131161f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2df88f17552c22a132b99d768789fb6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29af2d49384286f2c948b7f57697c6ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
A.![]() |
B.若![]() ![]() |
C.若函数![]() ![]() ![]() ![]() |
D.![]() |
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7 . 信息熵是信息论中的一个重要概念.设随机变量
所有可能的取值为1,2,…,n,且
,
,定义
的信息熵
.下列正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c5252fe790b57fb917728e410ef925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c94a17b49550283be4ec1a348c8534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6aff1256960a159195ce0b1b8ff83c7.png)
A.若![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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名校
解题方法
8 . 设函数
,
的定义域均为
,且函数
,
均为偶函数.若当
时,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18377150b1ced455e66c9054f7305379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbb39a17c9657d6d69175f108cc58b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd0a5004829e5ae20287292cbf30620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6959a4d33ea884bff11fd57ae61e730f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
9 . 已知函数
为偶函数,当
时,
,则当
时的解析式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e81e15b871dd32b2438ef8025bcc42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd8e36b3922575f25fb79933f4aa63e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
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名校
解题方法
10 . 对于
,定义
,
,其中
为
中最大的数,例如:
,
,
. 给定正整数
,根据以上内容,对于
,请回答下列问题:
(1)
(用
和
表示);
(2)满足
的有序数对
有多少个?
(3)满足
的有序数对
有多少个?
(4)满足
的有序数对
有多少个?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24d7720b93b6a0ebf04ea3b8545901da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf7efd1e98a1bac7832ef6367c88c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3a946cb466ad8db7174a8d318ce578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcb5694de40f2b01518fc88f0d556c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8436f067b7e4048dd0335f3fdb7e27b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca92c9a09bd82e0ebe8e065e09bfbc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/563d6edf4e17adf966f50a2e919f0212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fbd87eb7ee8470dcce89f059473895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be431af86fc0b0ba9b05d04c5586d82f.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149c9303df43cbe149c0f02b0737688e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df09d267ae01dcf773ffbc14ead57740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a57d1215099fab4a97db12b2fa8f14.png)
(3)满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8586c1fac679cb347a28b2baeb988d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a57d1215099fab4a97db12b2fa8f14.png)
(4)满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c259473293191a421065b88c80622359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a57d1215099fab4a97db12b2fa8f14.png)
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