名校
1 . 已知
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6711e06cd61ac21656512e33f4ee2cd6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-12-03更新
|
433次组卷
|
5卷引用:辽宁省渤海大学附属高级中学2021-2022学年高一上学期第一次月考数学试题
2 . 在
中,
,
,
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724bcf18ef47c962a297640bf7afd5dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47e66258d3c21dd9bf44dab2c960afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() | C.![]() | D.2 |
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2019-11-01更新
|
601次组卷
|
5卷引用:辽宁省锦州市凌海市第三高级中学2019-2020学年高一6月月考数学试题
辽宁省锦州市凌海市第三高级中学2019-2020学年高一6月月考数学试题山西省忻州市岢岚县中学2020-2021学年高一下学期4月月考数学试题甘肃省武威市第十八中学2019-2020学年高二上学期10月月考数学试题(已下线)2020届高三12月第01期(考点04)(理科)-《新题速递·数学》(已下线)2020届高三12月第01期(考点04)(文科)-《新题速递·数学》
3 . 解下列方程组或不等式(结果用集合或区间形式表达)
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bfdc3d686b27e0c1eca97818a7f66a9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056faef67eed42b6afc148ea84b40eb9.png)
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解题方法
4 . 某广场欲建一块![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11884ea468894d9cc30eddc09b4a39ab.png)
的矩形绿地,在绿地的四周铺设2
宽的人行道,如图所示.设矩形绿地的长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
,绿地与人行道一共占地![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdda3584-9747-4706-8860-550b2b6cd331.png?resizew=138)
(1)试写出
关于
的函数关系式;
(2)求
为何值时,占地面积
最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11884ea468894d9cc30eddc09b4a39ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdda3584-9747-4706-8860-550b2b6cd331.png?resizew=138)
(1)试写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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5 . 已知实数
,
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef8e04b48bc67ba9164a464f3a18ea4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-05更新
|
389次组卷
|
2卷引用:辽宁省锦州市2019-2020学年高一上学期期末数学试题
6 . 在
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1e18b1a23502efe74c6e57baeda8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
您最近一年使用:0次
2020-02-18更新
|
424次组卷
|
4卷引用:辽宁省锦州市凌海市第三高级中学2019-2020学年高一6月月考数学试题
解题方法
7 . 为进一步增强全市中小学学生和家长的防溺水安全意识,特在全市开展“防洲水安全教育”主题宣传活动.该市水利部门在水塘等危险水域设置警示标志,警示标志如下图所示.其中四边形
,四边形
,四边形
均为正方形,且
,
,其中
,
为加强支撑管.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/fb85c1cf-eeff-4bf4-b424-918c1b059ad5.png?resizew=178)
(1)若
,求
到地面的距离;
(2)若记
(
),
.
①求
的解析式;
②求支撑管
最长为多少?并求此时的角
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a09070bd5c82ae5a6f82a594d0b139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/fb85c1cf-eeff-4bf4-b424-918c1b059ad5.png?resizew=178)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71cd1e2bcab216a76a4dff0f7edb34f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb7c8c4b2e9cab25ae8f3f995139725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcadd1781ee9177e9bc76ce48afdd0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2a6e95948f6ac458c5243e6a72e93c.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5224a7da7fe6bc28971ce4c277f88588.png)
②求支撑管
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
名校
8 . 已知三角形的三边满足条件
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e16965b76e9302c5d63d177cf36000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd03342d677149f0dc5204cc577da1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e16965b76e9302c5d63d177cf36000.png)
A.30° | B.45° | C.60° | D.120° |
您最近一年使用:0次
2018-07-25更新
|
650次组卷
|
4卷引用:辽宁省锦州市凌海市第三高级中学2019-2020学年高一6月月考数学试题
9 . 在我国东南沿海地区,几乎每年夏秋两季都会或多或少受到台风的侵袭.所谓的台风,是指一种热带气旋.在气象学上,按世界气象组织定义,气旋中心持续风力在12级到13级(风速在
至
)的热带气旋称为台风因为台风风力大,并且还会带来暴雨,往往会给经过地区带来较大损失.在某海滨城市
附近海面有一台风正以
的速度向西北方向移动,据监测,台风中心
在该城市正东
处,台风半径为
,台风侵袭的范围为距台风中心
圆形区域,则城市
受该台风影响的持续时间为______ 小时.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef404966241c733e225b72a36f3c30b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e831c2671eedbbe664782fd375c215d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d68db10003062f971102ae9c71aa024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc598e0a0ebea206db23c06ac75fb3c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f971d44effe601c7244f7bcde43b863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f971d44effe601c7244f7bcde43b863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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10 . 等差数列
的前
项和为
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7020cf98fa9b1c2458105199fb22197c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e980df7a6b22f5883847e2472afaeb26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7020cf98fa9b1c2458105199fb22197c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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