1 . 已知函数
,
,若当
时,总有
,则实数t的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5c12d634d89fa6c1db1b95759efd08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4158d20bee581a27b381630a699065b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3404ec45ec06defdff924cf2f4acf059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b40d29bb2d5fccb821009b075a5c16.png)
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2 . 已知等边
的边长为
,P为
所在平面内的动点,且
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3a5134baeb2bfad7f4376634ec5423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea2ee6084ccda017840830036dddc23.png)
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2023-04-17更新
|
419次组卷
|
2卷引用:福建省福州屏东中学2022-2023学年高一下学期期中考试数学试题
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3 .
的内角
,
,
的对边分别为
,
,
,满足
.若
为锐角三角形,且
,则当
面积最大时,其内切圆面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](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/5f1a91385acb075a714f709653e3bddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023-04-16更新
|
410次组卷
|
2卷引用:福建省福州第八中学2022-2023学年高一下学期期中考试数学试题
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4 . 在一座尖塔的正南方向地面某点
,测得塔顶的仰角为
,又在此尖塔北偏东
地面某点
,测得塔顶的仰角为
,且
两点距离为
,在线段
上的点
处测得塔顶的仰角为最大,则
点到塔底
的距离为___________ m.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c9c09d1cb7c065df164ae5c62ea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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5 . 在
中,内角
的对边分别为
,若
,
,
,则
边上的中线长是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e9331a0aeb6be20548b99981a93c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f9c88edac18a30697feb5a9956b70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1ec9c5eaed4c211a040a2a33fb7c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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2023-04-16更新
|
581次组卷
|
5卷引用:福建省泉州市安溪铭选中学2023-2024学年高一下学期5月份质量检测数学试题
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6 . 已知
是
内部一点,且满足
,又
,
,则
的面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157943bb1e22bc07255f9139ce8d18b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/468aa4abb9d9f7c3617068fc1cfd6f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7502eee6f33e8c940dec63ab6473c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
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2023-04-15更新
|
329次组卷
|
2卷引用:福建省永春第二中学2022-2023学年高一下学期5月月考数学试题
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7 . 如图,某湖有一半径为
的半圆形岸边,现决定在
的北圆心
处设立一个水文监测中心(大小忽略不计),在其正东方向相距
的点
处安装一套监测设备,为了监测数据更加准确,在半圆弧上的点
以及湖中的点
处,再分别安装一套监测设备,且满足
,
.定义:四边形
及其内部区域为“直接监测覆盖区域”;设
.则“直接监测覆盖区域”面积的最大值为_____________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f631cfdf4666db95beb923072ced8d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f256afee1098dac22f423b19b43c89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7e00f8bacce4d649b535449f04568c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/949e9188-e438-44dc-949c-e3ce3e8d0801.png?resizew=265)
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2023-04-14更新
|
143次组卷
|
2卷引用:福建省福州市闽侯县第一中学2022-2023学年高一下学期3月月考数学试题
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8 . 已知锐角
中,角A,B,C所对的边分别为a,b,c,若
,
,则
的面积的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f075b8512af0f0e492db6f561fc3bee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2023-04-13更新
|
291次组卷
|
2卷引用:福建省福州格致中学2022-2023学年高一下学期期中考试数学试题
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9 . 用
表示不超过实数
的最大整数,譬如:
,则方程
的解为___________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed20d3d15496004875ec10544ecb4c95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93f2ef98c4060ae626904179317b6e5.png)
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10 . 在锐角三角形
中,内角
所对的边
满足
,若
存在最大值,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8e5ce6c55a720a332a08c07f1a89a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50025c9835d19b3044cd36f0f3611335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2023-03-21更新
|
1019次组卷
|
7卷引用:福建省三明市四校2023-2024学年高一下学期联考数学试题