1 . 已知正200边形
,联结对角线
,其中,
.则这200条对角线在正200边形的内部有______ 个不同的交点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6d060025eee050fb9ada8302a9621f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45583b6c157928362a6fc04dae2341a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54e26b993827d503af0dc7becad9272.png)
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2 . 已知二次函数
在
轴上截得的线段的长为
.则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba000af2a173f0f1f2246a9de1f78808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e260b088f071983f254ce8f5163fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad3758ffa8248ef39852a1493cbaa86.png)
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2009高三·天津·竞赛
3 . 已知椭圆
和双曲线
.椭圆
的左、右焦点分别为
、
,双曲线
的左、右焦点分别为
、
.过
作一条直线,与椭圆交于两个不同的点
、
(
在
与
之间),直线
与
交于点
.若直线
、
、
三线共点,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77a6ac05866b8d8875a690122b5a998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b25faaa8fa3e86cff58b7146201a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82a5421934348a612982ca099723b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455cb5ef8fa02f8740a01ea658ed7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1282962a17a48a18edf733204054d67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287adcb739a4890d108dd974358345fa.png)
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![](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/287adcb739a4890d108dd974358345fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0b702dab68a3cfec2b73a6e0103596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c429b542abf0ebee74a239b4857cf88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf229a41c52c7dadea5297f12b9c250.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea483675598c9074a94bf495ff6fb70a.png)
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4 . 已知
(
、
、
均为质数),且
,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4397ce4341e791929f65f600297f8bf.png)
![](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/2681e3635568fc4a8f4404efb1f41fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13130345a49e8b98fab49332a201538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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5 . 甲在黑板上写下正整数1,2,…,2009,然后背对黑板,让乙将黑板上的这些数擦去若干个后再添加上擦去数之和被7除的余数.当经过若干次如上操作后使黑板上只剩下两个数,其中的一个数是一位数.甲问乙:“剩下的两个数中较大的数是几?”乙答:“100.”则剩下的那个一位数为______ .
您最近一年使用:0次
2009高三·天津·竞赛
6 . 方程
的解的个数为______ (
为圆周率).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/babaa4bef60e4d6d0db98528bae6331b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
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7 . 设
、
、
为实数,且满足
,
.则
的最大值和最小值的积为______ .
![](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/003306b66c0445df7fd77c53947d5286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54484c40c60bbb18ef806fc1bb0a0d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 已知
是正三角形,
、
分别为边
、
的中点,
为
的外心,在边
上有一点
,使得
的面积等于
的面积的
.则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc96cbcfa8d5e19732facffb936bec5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f5f078c32f5caf439bac951d450fda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/424dd73a238dad799c9296e9ff829253.png)
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9 . 有10名选手
,他们的积分分别为9,8,7,6,5,4,3,2,1,0,名次分别为第1,2,3,4,5,6,7,8,9,10.现进行单循环比赛(即任意两名选手之间都恰进行一场比赛),且每场比赛都要分出胜负.若名次靠前的选手胜了名次靠后的选手,则胜者得1分,负者得0分;若名次靠后的选手胜了名次靠前的选手,则胜者得2分,负者得0分.全部比赛结束后计算每名选手的累计积分(即这次单循环所得的分数与之前的积分相加所得的和),并根据累计积分进行重新排名,求新的冠军累计积分的最小值(允许名次并列).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7af8f05302a6fb48a3706881ea0e2f.png)
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