2012·江苏无锡·一模
名校
1 . 对于函数
,如果存在实数
使得
,那么称
为
的生成函数.
(1)下面给出两组函数,
是否分别为
的生成函数?并说明理由;
第一组:
;
第二组:
;
(2)设
,生成函数
.若不等式
在
上有解,求实数
的取值范围;
(3)设
,取
,生成函数
使
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e9d649db6c1a1c0393672b2b459b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c974dafd7f992c28eb67787daa6387b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456e886959387cd96195f4caabafe8c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c21c32e9f15322304cbeed6613dbc74.png)
(1)下面给出两组函数,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c21c32e9f15322304cbeed6613dbc74.png)
第一组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab11d0a3cfc10843a2bd13010e6cd1c0.png)
第二组:
![](https://img.xkw.com/dksih/QBM/2015/9/25/1572243438313472/1572243444408320/STEM/163d7aa969df4d8d8e4cf8ebcf81149c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4d1e52442dacbb108ba02b25d92fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5ec10000ab1785a704ec76cf1fa518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e1eb2c725b645b25a995d292e0e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7d845ca55b3fe8e1fc2594b63f0cdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52506411dc15eacdee495917ccd07e32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee24447569f77f50cba0ce836a61172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2016-12-03更新
|
347次组卷
|
3卷引用:北京市玉渊潭中学2022届高三10月月考数学试题
12-13高三下·北京海淀·期末
2 . 下列函数中,为偶函数且有最小值的是( )
A.f(x)=x2+x | B.f(x)=|ln x| |
C.f(x)=xsin x | D.f(x)=ex+e-x |
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