1 . 已知函数
.
(1)求函数
的最大值,并写出
取最大值时
的取值集合;
(2)在△ABC中,
分别为角
的对边,
,
,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5393f1d5b0cdcc3a7a99fd2bd7b7fb8c.png)
(1)求函数
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974791680/STEM/3ad50e00259241379c81a0ef3ff6a8ba.png)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974791680/STEM/3ad50e00259241379c81a0ef3ff6a8ba.png)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974791680/STEM/fc8d52ee450b49949aa3cb02503a6ad9.png)
(2)在△ABC中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbf5887ebf0a2fb425dc594bb983585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edd51c782333e04862704165622ad68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac87123f12743c766e7ea585b045d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de6e1389b87a903f0cd149bf2bac4f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知函数
的图象上的每一点的纵坐标扩大到原来的
倍,横坐标扩大到原来的
倍,然后把所得的图象沿
轴向左平移
,这样得到的曲线和
的图象相同,则已知函数
的解析式为_____________________ .
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974652416/STEM/6626030af53f483fafa610d6bf1396e8.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974652416/STEM/8f599f5820a04a04b587dba72adc50a9.png?resizew=12)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974652416/STEM/aa264a75e4874d8daf24e585e0b55e81.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974652416/STEM/930af22eeab1465f9150bda0a8989851.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974652416/STEM/8aba711e2364479eaaa57a6a5d036754.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974652416/STEM/e5fa79a4b97349559b79dea294488926.png?resizew=71)
![](https://img.xkw.com/dksih/QBM/2016/10/19/1573078968410112/1573078974652416/STEM/6626030af53f483fafa610d6bf1396e8.png?resizew=61)
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3 . 已知函数
.
(Ⅰ)若
,求
的值;
(II)设
,求函数
在R的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9766b85889633a339d959bd6acf9f9.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc7983ac7f6c1fb4344707f03985047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e082bfaf56ab4d8afe94d07719e8f3.png)
(II)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3730767fa09dc13d3095d97d32c622e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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解题方法
4 . 已知
、
都是锐角,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2c3fa35b7a6f4a1a947851316258f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d149527e77c0f21f324469646f19085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
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2016-12-04更新
|
384次组卷
|
3卷引用:2017届重庆市育才中学高三上学期入学考试数学(理)试卷
真题
5 . 已知tan
=4,cot
=
,则tan(
+
)=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
401次组卷
|
4卷引用:2017届重庆市育才中学高三上学期入学考试数学(理)试卷
名校
6 . 已知△ABC中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
![](https://img.xkw.com/dksih/QBM/2016/10/13/1573067280629760/1573067285741568/STEM/98f4298eba6645519ee1beec9a8fd5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
463次组卷
|
2卷引用:2017届重庆市育才中学高三上学期入学考试数学(理)试卷
7 . 已知向量
是单位向量,向量
,若
,则
,
的夹角为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09c2a0e20b944d04545317ca7f8224e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f5aa4764d8d14d5c31f6d9b0d2f17d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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2016-12-04更新
|
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|
6卷引用:2017届重庆市育才中学高三上学期入学考试数学(文)试卷
8 . 平行四边形
中,
为平行四边形内一点,且
,若
,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff5008fe83aea3a19d7b727ee3f8359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a14fbc8d21a2afb874ed838ee99f00.png)
![](https://img.xkw.com/dksih/QBM/2016/10/26/1573095179591680/1573095185776640/STEM/2110e5ecda954e1db20ee0d2b97e435f.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e0c879a556f05831aac3940bfcec2d.png)
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1850次组卷
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2卷引用:2016-2017学年重庆市万州第二高级中学高二上学期入学考试数学试卷
真题
解题方法
9 . 若向量
,
,
满足条件
,则
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479779070b95c1c2845f0a24dc8d5f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a266e28ad260473e247cfdc77b504c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e32fb680577821aabb68b3d1f1ccc0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e4cb5563eb13564311025397e954d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.6 | B.5 | C.4 | D.3 |
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2016-11-30更新
|
545次组卷
|
8卷引用:2016-2017学年重庆市万州第二高级中学高二上学期入学考试数学试卷
2016-2017学年重庆市万州第二高级中学高二上学期入学考试数学试卷2015-2016学年四川省雅安市天全中学高一下学期期中理科数学试卷2015-2016学年四川省雅安市天全中学高一下学期期中文科数学试卷2010年普通高等学校招生全国统一考试(广东卷)文科数学全解全析(已下线)2010年广东省龙川一中高一下学期期末考试理科数学卷2015-2016学年广东省普宁市华侨中学高一上学期第一次月考数学试卷(已下线)第4章 章末检测-2018-2019版数学创新设计课堂讲义同步系列(湘教版必修2)(已下线)FHsx1225yl190