在
中,
为三个内角,
.
(1)若
,求角
;
(2)若
有解,求实数
的取值范围;
(3)求
的值.
![](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/81bf1ae6f2bbe237267c36d0825ed30a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d22c08802f8f1a223b7b46003e44d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fbf7816d631433cd88990ac023cc61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a7887df005a0007de2c984ee5e3b2d.png)
12-13高一上·黑龙江鹤岗·期末 查看更多[1]
(已下线)2011-2012学年黑龙江省鹤岗一中高一上学期期末考试文科数学
更新时间:2016-12-01 13:36:13
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【推荐1】在△ABC中,若sin(2π-A)=-
sin(π-B),
cosA=-
cos(π-B),
求△ABC的三内角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
求△ABC的三内角.
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【推荐2】已知函数
部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/2de6ea08-4c47-47c9-ae58-f3ec7661c23e.png?resizew=164)
(1)求函数
的解析式;
(2)已知
,若
,求
的值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89603923537a5172281cc881faed734d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/2de6ea08-4c47-47c9-ae58-f3ec7661c23e.png?resizew=164)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d56e15963d2766318be8dafb3797d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d53dfbadf57fa88527a539c1dae6c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07560f8981f8a6fb2c7ce36f0df1b5af.png)
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解题方法
【推荐1】已知向量
=(sinωx,cosωx),
=(cosωx,cosωx),其中ω>0,函数
2
-1的最小正周期为π.
(1)求ω的值;
(2)求函数
在[
,
]上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
![](https://img.xkw.com/dksih/QBM/2014/11/14/1571894981091328/1571894986637312/STEM/739c18601b8c4e23b4c81e756ac3b020.png?resizew=49)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741574f71252839af5c088cf224bf159.png)
(1)求ω的值;
(2)求函数
![](https://img.xkw.com/dksih/QBM/2014/11/14/1571894981091328/1571894986637312/STEM/f35759a105f94425a857e3480e8340f5.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2014/11/14/1571894981091328/1571894986637312/STEM/fba55ed328c3484a9e0020666f761b0d.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/11/14/1571894981091328/1571894986637312/STEM/d2a267badad84f2289907be2dee10840.png?resizew=17)
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【推荐2】已知函数
的最小正周期为
.
(1)求
的值;
(2)求函数
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f26bb2535c7aa24acb36e746c7e2ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc10e023f4f70f39dd3da52874ba616.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3202accc07b0e7f89091597a7f93684e.png)
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【推荐3】已知
(其中ω>0).
(1)若
的最小正周期是π,求ω的值及此时
的对称中心;
(2)若将
的图像向左平移
个单位,再将所得的图像纵坐标不变,横坐标缩小为原来的
,得到
的图像,若
在
上单调递减,求ω的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a99f41b5aba3250c1dc48bbfad7edf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6e69ad1a27916fb5c3d5901ded134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484c59288afa83ad0df6e12ff41dcbd8.png)
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解题方法
【推荐1】已知函数
.
(1)求函数
的最小正周期;
(2)设
在区间
上有两个解
、
,求a的取值范围及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d830895147820aa0fd1d8a900684a87.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450398974b1561ca801e102e16df6789.png)
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【推荐2】平面直角坐标系中,在以
轴的正半轴为始边,
角的终边上有一点
,已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
在
上的最大值为
.
(1)求函数
的解析式及函数
在
上的单调增区间;
(2)将函数
的图象向左平移![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
个单位长度,得到函数
的图象,若函数
为奇函数,求函数
的图象的对称轴方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8eb4114d1fa8b6e344e57c6862ab81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c195698ac387fe53b3b1e0248a1fcc92.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8613fb0779b9ceeafe02b30fb4229ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca1d71fd81df6d119db05422bf4475e.png)
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解题方法
【推荐1】设
为实数,给定区间
,对于函数
满足性质
:存在
,使得
成立.记集合
具有性质
..
(1)设
,判断
是否成立并说明理由;
(2)设
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bb6324279df94decba955e04ccfa9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c85eadf1c23b6b46183e978071442a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bf2cfe8f6fb4f99b4e424317f8bd09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6cb47a6d04ff727b416c1a3f3b83d.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998d6f6741a6ca69e251d48e67961fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cac663990f61a4a3086c6bea3d51f9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94689e1ac87f0837b025f92f477a9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e74920f57028200604c2691c8f0fb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐2】已知函数
是
上的偶函数.
(1)求
的值并判断
在
上的单调性;
(2)若
,使得不等式
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb93d9d1e7c520a769513870b3821a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b029e85e686623cdef977b2cb1f207a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa35bc5be85c853edd90f2a6d5727202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1ae8a1028fc55da80f4086506fa9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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