解题方法
1 . 定义“辅助角函数”:
.
(1)若关于
,的方程
有解,则
的取值可以是______ (写出满足题意的一个
值即可)
(2)若
是
最小内角,则函数
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517669409e6fe99179a3ba6fca0f8e66.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274dc78422bdeb61040bd37ef03b470f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b687dc330ee0af6c98b701599242e8.png)
您最近一年使用:0次
2 . 将含有
个正整数的集合
分成元素个数相等且两两没有公共元素的三个集合
,其中
,
,
,若
中的元素满足条件:
,
,
1,2, ,
,则称
为“完并集合”.
(1)若
为“完并集合”,则
的一个可能值为____ .(写出一个即可)
(2)对于“完并集合”
,在所有符合条件的集合
中,其元素乘积最小的集合是____ .
![](https://img.xkw.com/dksih/QBM/2014/12/9/1571919614574592/1571919620030464/STEM/790107ac317e4e84b002d7e1c5d9300d.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2014/12/9/1571919614574592/1571919620030464/STEM/17ee616a82e44131bea33713aba26fdb.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2014/12/9/1571919614574592/1571919620030464/STEM/d6b2b5cf9501409988209b2168346ff6.png?resizew=49)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea7fcdb5423c1c8c032a3efcf245682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c7bb58dca886fc65d874e2b30040c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9cfd1398bb75618f8221abd14e97af.png)
![](https://img.xkw.com/dksih/QBM/2014/12/9/1571919614574592/1571919620030464/STEM/d6b2b5cf9501409988209b2168346ff6.png?resizew=49)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5049cefc642e08e2ba05e4f1029486de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ca97c733e72b990f1ce7a39aea6510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c9c199d97b0f1c342ab2290133eabd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)对于“完并集合”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93d25235973603f56d262bb9165432f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
3 . 如图,在棱长为
的正方体
中,
,
,
,
分别为棱
,
,
,
的中点,点
在四边形
及其内部运动,
是棱
上的点.当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d483c4accd0aeafc4a83ff960f4e5c4d.png)
__________ 时(在线上填入确定的常数),若
,则动点
的轨迹长为__________ (填写一组关系即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d483c4accd0aeafc4a83ff960f4e5c4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f43488162b69d750f069b89a8b2d80f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/857f5a77-82d2-428a-b047-739420297b50.png?resizew=220)
您最近一年使用:0次
2022-03-31更新
|
430次组卷
|
3卷引用:湖北省黄石市有色一中2021-2022学年高二上学期10月月考数学试题
真题
名校
4 . 设
是定义在
上的函数,且
,对任意
,若经过点
的直线与
轴的交点为
,则称
为
关于函数
的平均数,记为
,例如,当
时,可得
,即
为
的算术平均数.
当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
________
时,
为
的几何平均数;
当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
________
时,
为
的调和平均数
;
(以上两空各只需写出一个符合要求的函数即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2960b33c3dca1e3acda4ebc7e59abaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7615495e833d173a8845b19405ba3a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e6649d4c9b13dfff3630d83766e585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6a23e27276b0531b9538b54d8fb9ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c22de602b384f193d8b19985234c59d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e6649d4c9b13dfff3630d83766e585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03556c333ab0b55fe86c937b2a5763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e6649d4c9b13dfff3630d83766e585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03556c333ab0b55fe86c937b2a5763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e6649d4c9b13dfff3630d83766e585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafd0e253a0a62512d50c656de3dc2e9.png)
(以上两空各只需写出一个符合要求的函数即可)
您最近一年使用:0次
2016-12-03更新
|
2187次组卷
|
4卷引用:2014年全国普通高等学校招生统一考试理科数学(湖北卷)