【题文】下列关系中正确的是 A.()<(<(B.(<()<(C.(<(<()D.(<()<(
【题文】下列关系中正确的是 A.()<(<(B.(<()<(C.(<(<()D.(<()<(
题型:难度:来源:
答案
【答案】D
解析
【解析】本题考查指数函数和幂函数的单调性及应用.
指数函数
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329012508-57403.png)
是减函数,又
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329012509-35045.png)
,所以
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329012509-97631.png)
幂函数
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329012509-50102.png)
是增函数,又
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329012510-70802.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329012510-84911.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329012510-74152.png)
故选D
举一反三
【题文】下列关系中正确的是
A (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-11694.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-46710.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-28653.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-37953.png)
B (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-37953.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-11694.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-46710.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-28653.png)
C (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-28653.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-37953.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-11694.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-46710.png)
D (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-28653.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-11694.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-46710.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011708-37953.png)
【题文】下列关系中正确的是
A (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011700-49343.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-48218.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-28047.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011702-35901.png)
B (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011702-35901.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011700-49343.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-48218.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-28047.png)
C (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-28047.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011702-35901.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011700-49343.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-48218.png)
D (
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-28047.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011700-49343.png)
)
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011701-48218.png)
<(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011702-35901.png)
【题文】 若
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011549-27847.png)
是任意实数,且
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011549-71247.png)
,则( )
【题文】 若
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011506-19776.png)
是任意实数,且
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011507-44463.png)
,则( )
【题文】函数
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011441-54901.png)
(
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011441-42811.png)
,且
![](http://img.shitiku.com.cn/uploads/allimg/20200329/20200329011442-37264.png)
)的图象必经过点 ( )
A.(0,1) | B.(1,1) | C.(2,1) | D.(2,2) |
最新试题
热门考点