已知函数
的图象的一部分如图所示.
![](https://img.xkw.com/dksih/QBM/2020/6/15/2485423864266752/2485891985416192/STEM/081a27ba-2b47-4aec-98db-09f031c49134.png)
(1)求函数
的解析式;
(2)当
时,求函数
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a396eff9db616a8ffbb22458e33b17d.png)
![](https://img.xkw.com/dksih/QBM/2020/6/15/2485423864266752/2485891985416192/STEM/081a27ba-2b47-4aec-98db-09f031c49134.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31d2eb189f9604d2dae4910a7d8f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780b4ed61bb4b73ac477f8e6d12a9eba.png)
更新时间:2020-06-16 14:23:06
|
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知①函数
,周期是
;②函数
的图象如图所示;在以上两个条件中选择一个解答下列问题.(注:如果选择多个条件分别进行解答,则按第一个解答进行计分.)
![](https://img.xkw.com/dksih/QBM/2021/1/19/2639645791125504/2639680330473472/STEM/e67e9d11-d32d-48ea-a294-a81cfa5254a3.png)
(1)求
的解析式,以及
时
的值域;
(2)将
图象上所有点的横坐标扩大到原来的2倍,纵坐标不变,再向左平移
个单位,最后将整个函数图象向上平移
个单位后得到函数
的图象,若
成立的充分条件是
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9421d642a5a74e120c0c7f79b83b4657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081fbd49566d5c28b470175350aeb45e.png)
![](https://img.xkw.com/dksih/QBM/2021/1/19/2639645791125504/2639680330473472/STEM/e67e9d11-d32d-48ea-a294-a81cfa5254a3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35faa6f625f48a22e51d6ffefb074145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a91e79ae829bf1224d792806438f8c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42239c7b42d8e235822e2dbabeea02e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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适中
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名校
【推荐2】已知函数
(
)的部分图象如图所示.
(1)求函数
的解析式和单调递减区间;
(2)若函数
在
上有两个不同的零点
,求实数m的取值范围,并计算
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681b5dd15828303d08aad2bbfc16ffff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/5/2093479f-73b8-454d-9663-e810f0ffd1fd.png?resizew=162)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b946a8ec829a341aa6806a3eb0b9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba7039324a6d810f4d5603d4edeb70e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b3af82b1a4c90950f98d1fae1060a1.png)
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解答题-问答题
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适中
(0.65)
【推荐1】设函数
,其中向量
,
,
.
(Ⅰ)求
的最小正周期与单调递减区间;
(Ⅱ)在
中,
、
、
分别是角
、
、
的对边,已知
,
,
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2104745f6548c40d42d046514e78df46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f6792476d2117c5e58c07cf9ef3d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b8099d5f79c500f85f7c4ed895959b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](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/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/2efdeeb6b84f83665c70b6a8069d703c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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解答题-作图题
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适中
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解题方法
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a44459599cba7740b36bbefb7e72dc7.png)
(1)作出
在
上的图像;
(2)若
,判断
是否为周期函数?如果是,求出最小正周期.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a44459599cba7740b36bbefb7e72dc7.png)
(1)作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d709578334fb8bf280533343e7506d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次