已知函数
.
(1)求
的最小正周期和单调递减区间;
(2)求
在区间
上的最小值,并求出此时对应的x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdb67bcdaf181d1d46f87bfdc1c42fb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f041e45e00b71ff9773d2412e5de2d8.png)
更新时间:2023-12-08 13:25:26
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适中
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名校
【推荐1】已知函数
的最小正周期为
,再从下列两个条件中选择一个作为已知条件:
条件①:
的图象关于点
对称;
条件②:
的图象关于直线
对称.
(1)请写出你选择的条件,并求
的解析式;
(2)在(1)的条件下,当
时,求
的最大值和最小值,并指出相应的
取值.
注;如果选择条件①和条件②分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95791f4c2fe3c7049ef810325977b5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630fb26ede6fb280085f33c8aae6aa01.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720091d877ca5e2837b0f410fb99631d.png)
(1)请写出你选择的条件,并求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在(1)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f2b0b4b894612d63af5e3e452c625c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
注;如果选择条件①和条件②分别解答,按第一个解答计分.
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解题方法
【推荐2】已知
.
(1)
,
,求
的值;
(2)
,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e519189291646bff3f4beef48ed855.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19215074e16c7288e853d336897bead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eeae4e4940d654f083f1073ba872504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db589bebb2f413b51ab7d684f7eb990.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eeae4e4940d654f083f1073ba872504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fccbb73592e7dccbcf37c392cac612.png)
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适中
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【推荐1】已知函数
.
(1)求
的周期和单调递增区间;
(2)将函数
的图象上每一点的横坐标伸长到原来的两倍(纵坐标不变),再把所得图象上的所有点向上平移
个单位,得到函数
的图象,当
时,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1912a67a4bcd3e7fb3a56fd9bd5da35c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db20d67f7d099c8d974e2f81954e023b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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适中
(0.65)
【推荐2】已知函数
.
(1)求
的最小正周期.
(2)求
的单调递增区间.
(3)若关于
的方程
在
上有解,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad137fdaac5c4f088e6a8c2eea29dbdb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004b9feb796a885546f1896e20c9ab58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de8b01d67986722e0385e66793d708a.png)
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【推荐1】已知函数
为奇函数,且
图象的相邻两对称轴间的距离为
.
(1)求
的解析式.
(2)将函数
的图象向右平移
个单位长度,再把横坐标缩小为原来的
(纵坐标变),得到函数
的图象,当
时,求函数
的值域.
(3)对于第(2)问中的函数
,记方程
在
上的根从小到依次为
,
,…
,试确定
的值,并求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e779bb3629cf50ef93131ad378365494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30df565ea4b03c3ab0124d155b54965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(3)对于第(2)问中的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c40363783d0e33e6a40e68957391ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca46524e23ce781f3f2410cc3863a6a6.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/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf143ca6acd9bafcce6716f4e6f2d9a3.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c37a41f96f37586cabf17b3c5b6fdf5.png)
(1)求函数
的单调递增区间;
(2)设
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c37a41f96f37586cabf17b3c5b6fdf5.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d394016b9fecac73f38cbc4ff18dee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864dd0281ef056416beb04741a3defd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
您最近一年使用:0次
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(0.65)
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【推荐3】已知
.
(1)求
的周期和单调递增区间;
(2)若
,求
的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae46dbff1a5c0c08288dae3362d8302f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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适中
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【推荐1】已知向量
,
,定义函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e32471c5-67c6-4f66-9a58-11e05fcfe124.png?resizew=267)
(1)求函数
的单调递减区间;
(2)画出函数
,
的图像.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd9c76738b5928191ac452390217266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63dd843920882cd7eb1642fc282b055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75ed28f34f5d3bcfb2e588c0982a3c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e32471c5-67c6-4f66-9a58-11e05fcfe124.png?resizew=267)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
(2)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897bf276a0b6c2121917d39b369df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b53d2fc2c94db93c240a77b69173105.png)
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【推荐2】已知函数
.
(1)求函数
的最大值及取得最大值时
的集合;
(2)求函数
的单调递增区间和对称中心;
(3)若方程
在区间
上有两个解
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737dcccd370842cfb0ee2d0f4aa67587.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2314796f9fd52c819d357fa585327b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0b1b34a0cb69bd9e0a4622b6352968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c30747d30b8eb73c3dbb6bbf0f32d29.png)
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