对于定义域为
的函数
,若存在正常数
,使得
是以
为周期的函数,则称
为余弦周期函数,且称
为其余弦周期.已知
是以
为余弦周期的余弦周期函数,其值域为
.设
单调递增,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75bc103f70339700c63af06ef81342e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166703f700475d6bcd4b8ee7c71f2c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bea8bf593f594c51fc7cc547482bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e265f69a407ec1203a19d17bea6c91.png)
(1)验证是以
为周期的余弦周期函数;
(2)设.证明对任意
,存在
,使得
;
(3)证明:“为方程
在
上得解”的充要条件是“
为方程
在
上有解”,并证明对任意
都有
.
2015·上海·高考真题 查看更多[7]
2015年全国普通高等学校招生统一考试理科数学(上海卷)(已下线)上海市华东师范大学第二附属中学2020-2021学年高一下学期5月月考数学试题北京师范大学第二附属中学未来科技城学校2020—2021学年高一下学期期中数学试题高中数学解题兵法 第一百零三讲 倒溯探源(已下线)重组卷04江苏省镇江中学2023-2024学年高一下学期3月学情检测数学试题(已下线)专题04 函数解答题(3类题型 理科)
更新时间:2016-12-03 14:33:15
|
相似题推荐
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】定义在
上的函数
满足:对任意的实数
,存在非零常数
,都有
成立.
(1)若函数
,求实数
和
的值;
(2)当
时,若
,
,求函数
在闭区间
上的值域;
(3)设函数
的值域为
,证明:函数
为周期函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf834d9ffb087427af01be7cfcd0a27.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7606ddcfd176248b734eed06cf2e13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fae0961f73fe66ddbb6a2d4c84fd5d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4af5195336841d2264ee3a00ae43f85.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca4856fe91854dda1b03a4586ed2773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】定义在
上的函数
满足:对任意的实数
,存在非零常数
,都有
成立.
(1)当
时,若
,
,求函数
在闭区间
上的值域;
(2)设函数
的值域为
,证明:函数
为周期函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf834d9ffb087427af01be7cfcd0a27.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fae0961f73fe66ddbb6a2d4c84fd5d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4af5195336841d2264ee3a00ae43f85.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca4856fe91854dda1b03a4586ed2773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解答题
|
较难
(0.4)
【推荐1】已知真命题:“函数
的图象关于点
成中心对称图形”的充要条件为“函数
是奇函数”.
(Ⅰ)将函数
的图象向左平移1个单位,再向上平移2个单位,求此时图象对应的函数解析式,并利用题设中的真命题求函数
图象对称中心的坐标;
(Ⅱ)求函数
图象对称中心的坐标;
(Ⅲ)已知命题:“函数
的图象关于某直线成轴对称图象”的充要条件为“存在实数
和
,使得函数
是偶函数”.判断该命题的真假.如果是真命题,请给予证明;如果是假命题,请说明理由,并类比题设的真命题对它进行修改,使之成为真命题(不必证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2554f921f8297cdee8522d2a99ed38e.png)
(Ⅰ)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6bdd83f5ea9b62ca64a410d9cdb978a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606cad75c083e4035b8077e40c6060b9.png)
(Ⅲ)已知命题:“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.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/e2554f921f8297cdee8522d2a99ed38e.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】对任意实数
,定义函数
,已知函数
,
,记
.
(1)若对于任意实数
,不等式
恒成立,求实数
的取值范围;
(2)若
,且
,求使得等式
成立的
的取值范围;
(3)在(2)的条件下,求
在区间
上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b4946c630e39cc947619db551814dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58cea1339bfca66837c36df0849adc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef323e833d089df48a77ccb4f34cbd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1eddf34d8cd831443d057812f7f742.png)
(1)若对于任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0479965118cdb512adaa4464b41169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9122faf025aa75f638019d03a7d6d55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c730566d80a5a5bbb288b04ea529a864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403cb390897ea1cbc5fe55d396ea1a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)在(2)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5790d5181783c15fd46d95bf18b796f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5125009195bc85a95170ef1c513773f2.png)
您最近一年使用:0次