1 . 设
,求证:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb03edf5bce29b0f33d984fedfaad6a7.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d330ea767309b783d2a223e43f9afb.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ea0a2bf633ce8022f7a41ef00cb61e.png)
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2 . 设函数f(x)、g(x)定义为
,
,求满足条件
的最小正整数m.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4ab154c3112c066f46506a7ef15999.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84035b3794f8d034050b86a44332088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6ef49c74b897907a91fa9245ed2848.png)
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3 . 设
个实数
;
满足条件
(1)
;
(2)
,
;
(3)
,
.
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa79f2092161050c26653fd3b0e91c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f22763ff690c00aea857309c84469c9.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075b9fc2e754f25318de88bb951bc9b1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497fc9eda178ca84726eec25b0d6796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e89661b5580931729f324e77d6895d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ac381401f4520f40d8d09d0da83975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4f65567330b9eea39f93f6b7e3e144.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50659c9372cb903cbc5d381db8ffe6ad.png)
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4 . 数列
定义如下:
,
,试求
的末位数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2c447d2997dcd8a654b0b1f9c40476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0262015d708023ae807391a91da73862.png)
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5 . 函数
.
(1)证明:
;
(2)在区间
上
恒成立,求实数
的范围;
(3)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc39da9cb2e9494581578a311cb5e53.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23c63619b1123c63ae7ce9f0b28cf63.png)
(2)在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93c13c9d1a1f85ab7a9b044c669bf53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82508bebab001a2bb0f2163c9e51215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364ab21b21b370aad544713d0e2eae44.png)
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6 . (1)给定正整数
,集合
,是否存在一一映射
满足条件:对一切
,都有
?
(2)
为全体正整数的集合,是否存在一一映射
满足条件:对一切
,都有
?证明你的结论.
注:映射
称为一一映射,如果对任意
,有且只有一个
,使得
题中“丨”为整除符号.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76238e269c78a50786c7d802f38d9244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0460251d1b3dbbb6883e6e2c7e71b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8d74bb3cf91246b56bbb5b584b0c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d61bd1212fab288ce1511ca367d231f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d557756cc1cf687c9e50908425272cc5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81995b5247fc02e27b6997dc7c0219bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b95693197b1a64474d46a57c991fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4cfe7dea265c4dd8ab396a774e91eb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d557756cc1cf687c9e50908425272cc5.png)
注:映射
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d869ac78a02498dd95f0d67990c97dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4ad551801ac85b50651304411dd59c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c3e3323c13b1ddc0e0869a6a6e6056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea97b95974dc37718ef97eca2ace1dd1.png)
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2004高三·福建·竞赛
7 . 无穷数列
中,对每个奇数
成等比数列,二队每个偶数
成等差数列.已知
.
(1)求数列的通项公式,实数
满足怎样的充要条件时,存在这样的无穷数列?
(2)求
的调和平均值,即
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e2eff04a2f9a8d85847cf41ff71e627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f27f993b10cc5f4e2e2ca356eccfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f27f993b10cc5f4e2e2ca356eccfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc1fc8aa9f6d6cbf67608dd916507c4.png)
(1)求数列的通项公式,实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bc48e2c83dc67de5438a1fd36154b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170c9f38dbb277d23c476a979a3f7bd9.png)
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8 . 对于平面上任意
个点构成的点集
,如果其中任意两点之间的距离均已确定,那么就称这个点集是“稳定的”.求证:在
格点的平面点集
中,无三点共线,且其中的
个两点之间的距离已被确定,那么点集
就是“稳定的”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49dac16bbcffa236fbee961ada16420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5166a51eecd9e749d31defa9c72615b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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9 . 若
,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6270bb08b90f72d5671ab8225f356c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543efc81c8d95c437d1514bc01704fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00efe075d3d187df2613113c37e8aaec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623eef12f37f0b85ddd367faa9b3bfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e19d1e99151d8dc53a21a5e4a4676e1.png)
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