1 . 设直线与函数
的图像恰有两个不同的公共点.求出所有这样的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7ec9f1afdeaf74024bc6009ee39ed9.png)
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2011高三·浙江·竞赛
2 . 设
.求
在
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f5f7a36e251bbc424ccc127ebb2881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeaa12822c520bbd15fb92bfd9ce2ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b502bcc2877f880acee4c0df59346a.png)
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2011高三·天津·竞赛
3 . 设
、
、
、
、
、
为实数,且
对任意的实数
成立.证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dcc8b824bf93f5981bfd1fd3d1a71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9723d411b2a0409c768eb8bbbe2f0bc0.png)
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2011高三·陕西·竞赛
4 . 设
为直线
上的动点,过
作抛物线
的切线,切点分别为
、
.
(1)证明:直线
过定点;
(2)求
面积
的最小值,以及取得最小值时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aafae84e7fe39dc5b694c39405201d32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2011高三·福建·竞赛
5 . 已知
是平面内凸三十五边形的35个顶点,且
中任何两点之间的距离不小于
. 证明:从这35个点中可以选出五个点,使得这五个点中任意两点之间的距离不小于3.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84108723fc47280faa825f7e732cb7d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84108723fc47280faa825f7e732cb7d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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2010高三·福建·竞赛
6 . 已知函数
.试求
)在区间[0,1]上的最大值g(a).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2faf272c620bc8d77217893572bcebb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19951f3364fb04433feed743bc37975d.png)
,当
时,
.试求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19951f3364fb04433feed743bc37975d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5bb89c3ad435f1ef59307b174105ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e46371f310e03a153a1698aad9d4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752b1fffc0ff005bea12d8ff1129699b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . (1)表1是在一次物体的平抛实验中测得的数据.
表1
假定物体的轨道方程是
,求实数
的值,使得每个测点
到所求的轨道曲线上的点
的距离平方和
最小.
(2)在(1)的要求下,对表2的数据,求轨道曲线
的方程(系数
要求精确到0.01).
表2
表1
![]() | 0 | ![]() | ![]() | ![]() | ![]() |
![]() | 0 | ![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ec9ae81bd6466160bf49895da6179e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bb3cf3a28d586f33625fb82912a08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341e3acd5491f4c6b610e8aa7b5aafc7.png)
(2)在(1)的要求下,对表2的数据,求轨道曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
表2
![]() | 0 | 1 | 2 | 3 | 4 |
![]() | 0 | -2.60 | -9.90 | -22.60 | -39.80 |
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9 . 求下面关于
混合组的解
其中,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e647c14561826ba9e396acc5a3792c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbcbdfb3c89d2e619f27e27dd5d8b881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec92a7b2634be88c05cb62166dc09c64.png)
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