名校
解题方法
1 . 已知函数
,设
,若存在
,使得
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e955d7844dc0d793a27266306fcc03a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11144bcfa2540dde9290046d49724ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-11-09更新
|
465次组卷
|
3卷引用:北京市朝阳区2024届高三上学期期中数学试题
名校
解题方法
2 . 设函数
的定义域为D,若存在常数a满足
,且对任意的
,总存在
,使得
,称函数
为
函数.给出以下四个结论:
①函数
是
函数;
②函数
是
函数;
③若函数
是
函数,则
;
④若函数
是
函数,则
.
其中正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea6e5977b7ef99b71522bd98e7cab5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8af73bbdedee43e2a99d06ee9c67b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7304dcfd0f6ec92c7cb9f6002c461d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ff0f6c6750f2d79db123780fdf6a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c410536b4b795809f155e107bed17f.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc4e3775c850f1c1804f9eb7a70153a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d8f894492a8126f5f133dec4cd68833.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7192d87d0fa400d5d7dba57924bbbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bea0dd7e474bcd04db2544427ba0488.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d17067e7b751a155205d0c102d27db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bea0dd7e474bcd04db2544427ba0488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15a13b4190ac3d5feaee27a4c97b21b.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb3569c8e9f4840d71bdb191cd3c098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0774fc80043e676a7e54129bf789471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341a6653e7eb13d994bfd2f2ea5e58ea.png)
其中正确结论的序号是( )
A.①② | B.①③ | C.①④ | D.①③④ |
您最近一年使用:0次