1 . 已知函数
,
,若存在实数
使
在
上有2个零点,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7fceb2c73d92d7c3abfc70f9bde2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7ce9120a714c2fb1f2bded90416be4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b7c2420c387be8882df4359ac10b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e62a68c0dfbfdda7bee162408768ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3卷引用:上海市川沙中学2023-2024学年高二下学期期中考试数学试题
2 . 函数
的导函数为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224f32fd50e1c4144a14224796c8315f.png)
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3 . 已知双曲线
左右焦点分别为
,点
为右支上一动点,圆
与
的延长线、
的延长线和线段
都相切,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24164ee062fd8c86ad35d50bb37c0090.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f06cddf90c2b1256b42462a270fd1e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da01a3abe1c9dc4e6283afa0dc1a0d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83e02c09428538ce8ae136cff26d3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24164ee062fd8c86ad35d50bb37c0090.png)
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4 . 若方程
表示焦点在
轴上的双曲线,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59fa5ec676d29945f99eb88efa696447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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5 . 某人抛掷一枚质地均匀的硬币10次,其中正面朝上7欠,则该硬币正面朝上的频率为________ .
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6 . 2022年北京冬奥会的顺利召开,激发了大家对冰雪运动的兴趣. 若甲、乙、丙三人在自由式滑雪、花样滑冰、冰壶和跳台滑雪这四项运动中任选一项进行体验,则不同的选法共有______ 种
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7 . 已知空间向量
,
,则向量
在向量
上的投影是____________ .(用坐标表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14e6ce38d3aa1cf65e5ae2ec9eb157e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380198c5e99b2e86c1b78d5344bc3ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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8 . A、B相互独立,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2731eecd8ff3e2264eebfd7cbbaaea1b.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d493dbdf4efe16ac774db2a02cf3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd061e199e9d763a2b5857e6f8ada09c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2731eecd8ff3e2264eebfd7cbbaaea1b.png)
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9 . 已知甲组数据
,
,…,
的茎叶图如图所示,其中数据的整数部分为茎,数据的小数部分(仅一位小数)为叶,例如第一数据为5.3.
、方差
、中位数M;
(2)乙组数据为
,
,…,
,且甲、乙两组数据合并后的30个数据的平均值
,方差
,求乙组数据的平均值
和方差
,写出必要的计算过程和步骤.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bbae9353140c2235610852d04a9a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848dac3d6db7c23c58f399970b3f9b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbc29b47b83fdc5368770b7b1acb439.png)
(2)乙组数据为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13423c094861baf4b759b7f3d8c3c226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a9f28d2342d61e9fae0744b0a8a1cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b382035a4e07f9a8679d024bf1f7b7fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cf8479865093acc003149c1f00fd73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0da8a9d862e0005c44a8cb8fd262bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1295cbd36fdc55a55b549aa2dd5887.png)
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10 . 已知
,椭圆
,点
是该椭圆的右焦点,过点
的直线
与椭圆
交于不同的
两点.
(1)当
且
的斜率为1时,求
;
(2)当
时,求
的取值范围;
(3)是否存在实数
,使得对于任意的直线
、
都不是直角三角形.若存在,求出所有满足条件的
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4203a35ca9d3174d600fffc3dae1ea63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd82dde0343bdcd7822f076bf5859e39.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad4dd3be7b5428975bc9100f2d33732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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