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1 . 设
,
,
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37588ebc87c4098740c1bd4e79b7d0cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fc60a453c7cbb66920841dfaae7c7e.png)
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2 . 在椭圆中,
为中心,
为短轴端点,
,
为两个焦点.已知
,且点
到直线
的距离为1,则椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/f8e512c8b64a394a914766c9d4b95a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da01a3abe1c9dc4e6283afa0dc1a0d39.png)
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3 . 设
,平面向量
,
,
.若
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ebb1440ca7825bcde067900dcf724b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea430890cdadcd77f51da2a51afbaa2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0766bbc31ef5d83bd798581eafb0e58e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602aaa283d995722be8bb85b403f7c2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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4 . 在平面直角坐标系
中,过
轴上一点
作两条直线
,
,其中
,
,
,
均在抛物线
:
上.已知
,
分别经过
轴上的点
,
,试比较
与
的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34876d748f30fa4fc2eb6a686b5ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd185f841f1a65d36be61eabadc1228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5206e025c703ef889c6d596f350d70f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722a6a702db7dcb53be644d6fd614e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd946bffbd8d572c661f791a75c3bdd.png)
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5 . 设
为定义在
上的函数.若正整数
满足
,则
的所有可能值之和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6aa37684dab53bb809b58c38ef8a45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97657ccb38d4024a106ef3070122685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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6 . 正三棱锥的侧棱长为1,侧面与底面所成二面角的大小为45°,则该正三棱锥的外接球的表面积为______ .
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2021-08-21更新
|
466次组卷
|
2卷引用:浙江省金华第一中学2021年全国高中数学联赛仿真模拟最后一卷一试试题
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7 . 甲,乙两人进行一场七局四胜制的游戏,任何一人累计获胜四局即为胜方,同时游戏结束,另一人为负方.若在每局中,双方各有
的概率获胜,则游戏结束时胜方比负方多获胜的局数的数学期望为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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8 . 现有六人排成一列,每人在红,黄,蓝,白,黑五种颜色的球中选一个(每种颜色的球足够多).要求任意相邻两人所选的球或者同色,或者至少有一个为白色,则满足要求的选球方式数为______ .
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9 . 数列
定义为
,
.证明,存在正整数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de31bd1348cec72d866e93e24a39d215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a176f6bb04f681f6c43aa5d6bc9c82.png)
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10 . 实数
与函数
满足
,且对任意
均有
.令
,则
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c48d9f4e43b9a862197f2d300ed1ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c2616940f893993263155c95dadab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6d896bbcc6eb0f76e42ad67c0c5e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fdd597c8d015408e2feb467efef21d0.png)
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