1 . 设
的三个内角分别为A,B,C,假设
的最大值为
,将
写成最简分数后分子分母之和为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd9abd7168399e6881800577a90c3b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c9121cede0ee0562e23b8a26b34616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c9121cede0ee0562e23b8a26b34616.png)
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2 . 已知函数
为奇函数,则α的值可能为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f30c36a0fbec7410e96ed9348df0db.png)
A.0 | B.![]() | C.![]() | D.![]() |
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2021-09-07更新
|
376次组卷
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3卷引用:2020年浙江省温州市摇篮杯高一数学竞赛试题
3 . 如图,在
中,D为边
的中点,
,则
=________ ,
=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970e604196bdfb0b6fa35d6d14b71d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2021/8/21/2790849225170944/2803162736074752/STEM/9377831f05e144598cfb845c85e4ca1e.png?resizew=247)
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4 . 已知函数
(a∈R)满足
.
(1)求
在区间[0,
]上的值域;
(2)若
,
.求sin
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1974017be0dd1b5cebf6215c37cc3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ccd687226b273d560cb53199b99671.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/108efecca32d192f64a7cc27a6b2e8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c067c43427ea70eb0949c4d10f9883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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5 . 在
中,角
所对的边分别为
,若
,
,则
的面积为()
![](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/a846006179b938f691824a7f53c0dbf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680575957a2e8c2279858406245beaaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知函数
的图象向左平移
个单位后得到函数g(x)的图象,则g(0)=_________ ,若实数x1,x2满足
,则|
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca26d7dac38b616203456afcaac690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdaf49f9611922348aa2784465da614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6edc010b2238d6a35b48213bfebabe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
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7 .
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae3954d413682c1c3752d00530eecfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3370a6c06740143356c0800f56c7a61c.png)
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8 . 设m、n都是正整数.若关于x的方程
有实数解,则m、n应满足的条件是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaac436581cf50271e6836a2f484f9eb.png)
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2018-12-17更新
|
111次组卷
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2卷引用:第三届高一试题(决赛)-“枫叶新希望杯”全国数学大赛真题解析(高中版)
9 . 实数
满足关系式
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25120fedd3ee58ee11aaa4986e90082.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69295f5809e72b2038af9013abeb8194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25120fedd3ee58ee11aaa4986e90082.png)
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名校
10 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4a41b059422eba194ba74064dd0751.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4a41b059422eba194ba74064dd0751.png)
您最近一年使用:0次
2018-12-14更新
|
251次组卷
|
5卷引用:2004年北京市中学生数学竞赛_高一试题
2004年北京市中学生数学竞赛_高一试题2015-2016学年陕西省延川县中学高一下学期期末考数学试卷陕西省西安市西北大学附中2018-2019学年高一下学期期中数学试题广西南宁市第三中学2020-2021学年高一下学期第一次月考数学试题(已下线)模块二 专题4 《三角函数恒等变换》单元检测篇 A基础卷 (北师大版)