名校
1 . 甲船在
岛的正南方向
处,
千米,甲船以4千米/小时的速度向正北方向航行,同时,乙船自
岛出发以6千米/小时的速度向北偏东
的方向驶去,航行时间不超过2.5小时,则当甲、乙两船相距最近时,它们航行的时间是______ 小时.
![](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/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
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名校
2 . 已知
,
,且
,则
的最小值是______ ;当
取得最小值时,
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6d474e6cd19b54fcc32889975ceb9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af4669c96dd79a2e582f744fc1bc442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af4669c96dd79a2e582f744fc1bc442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a042f7647c4310c80f7ffe144c81c0e.png)
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3 . 如图,在扇形
中,半径
,
,
在半径
上,
在半径
上,
是扇形弧上的动点(不包含端点),则平行四边形
的周长的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
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2024-05-02更新
|
266次组卷
|
5卷引用:广东省梅州市曾宪梓中学2023-2024学年高一下学期期中联考数学试卷
解题方法
4 . 在长方体
中,
,分别在对角线
上取点
,使得直线
平面
,则线段
长的最小值为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de266886db89ca563b1d68f6327e810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f80007f24e1f975ff9664fb147a66ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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名校
5 . 如图,某商场内有一家半圆形时装店,其平面图如图所示,O是圆心,直径MN为24米,P是弧
的中点.一个时装塑料模特A在OP上,
.计划在弧
上设置一个收银台B,记
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7223bf3fdadd6f44abce82899bc1ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913d94c18975459c5eb591afce8cc705.png)
_________ (用
表示):
(2)若
越大,该店店长在收银台B处的视线范围越大,则当店长在收银台B处的视线范围最大时,AB的长度为________ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ae728c7be0f0cf78711f3fa5ccccf30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7b628bd4ac303c86e30508eb81ff60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa33d0f23b18d580b8b2afb0dfd0c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e595083e5fd6282c93a636c66680ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7223bf3fdadd6f44abce82899bc1ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913d94c18975459c5eb591afce8cc705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bc29145f6e7557711c34b443bd5e84.png)
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2024-04-16更新
|
330次组卷
|
2卷引用:福建省厦门市外国语学校2023-2024学年高一下学期第一次月考数学试题
6 . 某商店销售
两款商品,利润(单位:元)分别为
和
,其中
为销量(单位:袋),若本周销售两款商品一共20袋,则能获得的最大利润为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259e5006ea54b62eea987ca259eaa8e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264b75b033160540ca40d9d5b4d06104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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名校
解题方法
7 . 设正实数
满足
,则
的最小值是__________ ;当
取得最小值时,
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f560aa0118baaafa24de782983f5460a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a1be5c1350d02543a96399cc14a51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a1be5c1350d02543a96399cc14a51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e792f06dbaa54f57626a1d9523fc5390.png)
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2024-03-12更新
|
115次组卷
|
2卷引用:河南省许平汝名校2023-2024学年高一下学期开学考试数学试题
8 . 已知在
中,
,若
的内接矩形的一边在BC边上,则该内接矩形的面积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d35f4b982c518af34b054dbfa725d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
9 . 若闭区间
满足:①函数
在
上单调;②函数
在
上的值域为
,
,则称区间
为函数
的
次方膨胀区间. 函数
的2次方膨胀区间为_____________ ;若函数
存在4次方膨胀区间,则
的取值范围是_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91393ddcf411f513b77caad29a31cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6724c68c4206bd95683998d800f7f676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a993d222157197c263ae4a8255228a69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c4821d3e69fbb6a1f8d0afe0d725f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解题方法
10 . 设
表示函数
在闭区间
上的最大值.若正实数
满足
,则正实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1377e4eba3864dab59461147d68da32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6432f9fa6e4da69d22756a2c9637a3ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cdf31472eeb79ede06ac13ef94a2c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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