已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
的部分图像如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/0a17b23c-3473-4ca6-8a29-95019ed7991d.png?resizew=229)
(1)求函数
的解析式;
(2)若
,求函数
的最值,并求出取最值时相应x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105d17572928a951044115b6e30fc505.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/7/0a17b23c-3473-4ca6-8a29-95019ed7991d.png?resizew=229)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbadbca2e4f273b76f21896e66d820b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
20-21高一下·辽宁沈阳·期末 查看更多[2]
辽宁省沈阳市五校协作体2020-2021学年高一下学期期末联考数学试题(已下线)突破5.4 三角函数的图像与性质课时训练-【新教材优创】突破满分数学之2022-2023学年高一数学重难点突破+课时训练 (人教A版2019必修第一册)
更新时间:2022-07-06 11:30:02
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名校
解题方法
【推荐1】已知函数f(x)=Asin(ωx+φ)(其中A>0,ω>0,0<|φ|
)的图象如图所示,点B、D是其图象与x轴的交点,C、E分别是函数f(x)图象的最高点与最低点,且点B的坐标是(x0,0),x0>0,
,∠CBE
,|CE|=8.
![](https://img.xkw.com/dksih/QBM/2020/2/2/2390345217130496/2421345358675968/STEM/7958413e-3b9d-42c9-adc8-a1f6dd9dea83.png?resizew=263)
(1)求函数f(x)的解析式;
(2)若函数g(x)的图象与函数f(x)的图象关于点 (2,1)对称,求当4≤x≤6时,函数g(x)的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be9644ee8911341949993e6f0b26d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/974310a9480b192ef827087a478e91e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72add9c1c236c3cd8f0be037f200798.png)
![](https://img.xkw.com/dksih/QBM/2020/2/2/2390345217130496/2421345358675968/STEM/7958413e-3b9d-42c9-adc8-a1f6dd9dea83.png?resizew=263)
(1)求函数f(x)的解析式;
(2)若函数g(x)的图象与函数f(x)的图象关于点 (2,1)对称,求当4≤x≤6时,函数g(x)的值域.
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【推荐2】已知函数
,
、
分别为其图象上相邻的最高点、最低点.
(1)求函数
的解析式;
(2)求函数
在
上的单调区间和值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b7acc78520f10b241b222a78a9fc2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59cac1ac9901e7c619e915e709810363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6641d5e0775edb117fc1db42eff1a9.png)
(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/18c9aeed3c8c5a04e48d011c607f9142.png)
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【推荐1】函数
(
,
,
)的部分图象如图所示.
的解析式;
(2)将函数
的图象先向右平移
个单位,再将所有点的横坐标缩短为原来的
(纵坐标不变),得到函数
的图象,若关于
的方程
在
上有两个不等实根
,
,求实数
的取值范围,并求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fcd3cea5f5e2fe943490dcb65d74c73.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/29e1734dcc7697235124fbaba4ba6033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b97537de8e5111a3fd21a175577e504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c958b625e443b4c66517e37b4e015e67.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02011cb66995c65cab56f1ad00de0f21.png)
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【推荐2】在平面直角坐标系
中,已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/101f5b6c-f66e-4768-bec7-9a3394113722.png?resizew=175)
(1)如图所示,函数
的图象与直线
三个相邻交点的横坐标为
、
、
,求
的值;
(2)函数
的图象与
轴的交点
、
、
,且满足
、
、
成等差数列,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e837e4a21c799dcac2141289a1c23.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/101f5b6c-f66e-4768-bec7-9a3394113722.png?resizew=175)
(1)如图所示,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d540d4f6c8559445df622ddf956e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4219cc91506e90fc89f7cc9dfc660306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc5ab0e4e7dff675ed8d5d6c786cf4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/c388f1f7160d3397610633dfde015fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a82596d3e0eea2ea14448e3ede29c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8938257f9486c4b28768aa2cf4bb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
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【推荐3】已知函数
的图象过点
,且图象上与
点最近的一个最低点坐标为
.
(1)求函数
的解析式;
(2)若将函数
的图象向左平移
个单位长度后,再向下平移2个单位长度得到
的图象,写出函数
在区间
上的单调递增区间(不需要写过程);并求出函数
在区间
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f61fa37c7e63c65628bf913923da2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048898fdc253e54e973eb6656d884305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2832b2986f7530d1a164fa887add4b44.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fee19fef930b81f2605c4642b6211c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fee19fef930b81f2605c4642b6211c.png)
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