函数
(
,
,
)的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2020/2/20/2402982290358272/2403695319416832/STEM/4022822fa994469083b7c1e791c000d7.png?resizew=184)
(1)求函数
的解析式;
(2)求函数
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4d2bc0e9cd0ce0b5f0512f73442199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685b502c12386145585c3016c57d09b6.png)
![](https://img.xkw.com/dksih/QBM/2020/2/20/2402982290358272/2403695319416832/STEM/4022822fa994469083b7c1e791c000d7.png?resizew=184)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70fe57751a85cb509471a0d9622147d3.png)
更新时间:2020-02-21 11:13:33
|
相似题推荐
解答题
|
适中
(0.65)
【推荐1】已知函数.
(Ⅰ)求的最小正周期及单调递增区间;
(Ⅱ)求在区间
上的最大值和最小值.
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【推荐2】已知函数
,
(
).
(1)试讨论并直接写出
的单调性;
(2)试求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c44322d8cbb031a04e8c26924b33735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/349e6fb37865c85e9db05d0e9b8a42fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eef8ec4331dd6369c5375e4c20b46195.png)
(1)试讨论并直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解题方法
【推荐1】已知函数
(
,
,
)的部分图象如图,将该函数图象向右平移
个单位后,再把所得曲线上的点的横坐标变为原来的2倍(纵坐标不变),得到函数
的图象.设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/8bec8174-a0ce-430f-aec2-ee7c7d505f98.png?resizew=184)
(1)求函数
的最小正周期T;
(2)在三角形ABC中,AB=6,D是BC的中点,AD=
,设∠BAC=
,
,
,求三角形ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5560425727c95ea2e57e657fad919d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af87a22a39bd12c4734b0bdf1596b42a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb076bad84890e24dbdc945ad543cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccdeb26784539274084b2a71034a14b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/8bec8174-a0ce-430f-aec2-ee7c7d505f98.png?resizew=184)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)在三角形ABC中,AB=6,D是BC的中点,AD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de31a7b108b0fdc888133f701e7c79b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4e16155c0a82a09e3f6e160df42f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d0929203545347012b0ec1bda1f2ef.png)
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【推荐2】已知函数
,
,
,
,
的部分图象如图所示,
、
分别为该图象的最高点和最低点,点
的坐标为
.点
的坐标为
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/c6708cfa-5a4c-4f8a-8ae1-6444b13da5a4.png?resizew=194)
(1)求
的最小正周期以及解析式;
(2)求
增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055d037815f00e6b285c9bc20d0c0571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ed0ea8fec14dc6eeee35c8ef8202c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c8cfa6f9004352171f5b1fde939ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450f7eac0c7aaf877ce60097b7199776.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/c6708cfa-5a4c-4f8a-8ae1-6444b13da5a4.png?resizew=194)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐3】已知某海滨浴场的浪高
是时间
(时)(
)的函数,记作
.下表是某日各时刻的浪高数据.经长期观测,
可近似地看成是函数
.
、振幅
及函数解析式;
(2)依据规定,当海浪高度高于1m时才对冲浪爱好者开放,试依据(1)的结论,判断一天内8:00至20:00之间有多长时间可供冲浪者进行运动.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38197c34c42e180eac825662efd62d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238dccfbd5e8c3031f2f86088739ece1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4dafff83fd807d0010d1805d9f4552e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4dafff83fd807d0010d1805d9f4552e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21033dcaa34594dfedff1b6917057e08.png)
![]() | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 |
![]() | 1.5 | 1.0 | 0.5 | 1.0 | 1.5 | 1.0 | 0.5 | 0.99 | 1.5 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)依据规定,当海浪高度高于1m时才对冲浪爱好者开放,试依据(1)的结论,判断一天内8:00至20:00之间有多长时间可供冲浪者进行运动.
您最近一年使用:0次