名校
解题方法
1 . 已知O为坐标原点,
,对于函数
,称向量
为函数
的伴随向量,同时称函数
为向量
的伴随函数.已知函数
,
(1)求
的伴随向量
,并求
.
(2)关于x的方程
在
内恒有两个不相等实数解,求实数
的取值范围.
(3)将函数
图象上每一点纵坐标不变,横坐标变为原来的2倍,再把整个图象向左平移
个单位长度得到函数
的图象,已知
,
,在函数
的图象上是否存在一点P,使得
,若存在,求出点P坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15749886728078478e1eb8129f55b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66655b7a6825b124ce596197bf2aa14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074d049ba730bc0a038a076d5eb10035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6799b234237333b0efa331d98f0374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad690f43eb62e063ff394a77a0a44c1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c968347eabbb636d20b607a3bcfe0ac3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941cefcb5869a853010bbe90aa11e0c5.png)
(2)关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba1f65bfa485c0fa5cf314adb28158f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34249e9efcd74ff7bdd383797a1d5972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f985137ecc361cf8d07e61e68729f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b354aefbabbc26c70388d76919dad557.png)
您最近一年使用:0次
2022-05-02更新
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164次组卷
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2卷引用:北京市中关村中学2021-2022学年高一下学期期中考试数学试题