已知函数
,则
在
上不单调的一个充分不必要条件是
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573196105891840/1573196111872000/STEM/3683880bee904143874d32e1ba87b7cc.png)
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573196105891840/1573196111872000/STEM/2199ce0c71e947fb842eb941fca45edd.png)
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573196105891840/1573196111872000/STEM/6f7ed2a937e441b4baa3973becf378a9.png)
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更新时间:2016-12-05 02:18:35
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单选题
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较易
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名校
【推荐1】设
:
,其中
;
:
.若
是
的充分不必要条件,则实数
的取值范围为
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A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐2】“
”的一个充分不必要条件是“
”,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafe647840cc2ace0d94bdca3c4fb03d.png)
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解题方法
【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4485d7adbffb2cc35a4a0df69d42f146.png)
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解题方法
【推荐2】已知函数
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