已知函数
,若
,则实数
范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d4a5ba00ae1288b09800f1c9593874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9824925eb41b191d00dc2ca322a964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
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2022·黑龙江哈尔滨·模拟预测 查看更多[3]
更新时间:2022-10-24 00:30:48
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相似题推荐
单选题
|
较难
(0.4)
【推荐1】若存在
,使不等式
成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f702bfe1a376398286f1dc3daf8c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d778933436ea888f4d23462c00efabd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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您最近一年使用:0次
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解题方法
【推荐2】已知
,下列不等式恒成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636a8d9e362e768e825a98afdea2bd5b.png)
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您最近一年使用:0次
单选题
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【推荐1】函数
满足
,当
时都有
,且对任意的
,不等式
恒成立.则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf116ecbdb894c1d05d5b3b5203c10a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5182a8b74c894231021e20380f864fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698cf53f76a1d637dfe2732d0a866eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503a002dd51f5338c4bc0e15fb201c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ec5714a4a34a3c5a3f780a8f00a89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
【推荐2】已知函数
是定义在
上的奇函数,且当
时,
,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9a72e0e9d6965851ab248d11b9bd4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655e7d8703b894214d00067290ed6e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d66d8bfc8de4f58c09bff4477f5b5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d9543e4c91e5897a934cf49e2ccbc2.png)
A.![]() ![]() | B.![]() ![]() |
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您最近一年使用:0次
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【推荐3】设函数
在
上存在导数
,对于任意的实数
,有
,当
时,
,若
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9302c3abe285f858b52ddc9291e834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b536a39baf119df5e962cb49b5222270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3ffc8926213c155915ea609e606278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdda8a2818c894e9ae6e10681afffe5.png)
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您最近一年使用:0次
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【推荐1】若
,且
,则下列不等式一定成立的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231a9eeb97366809d2333a38b36cc462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b836fcbd62227b221276828892d58a.png)
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您最近一年使用:0次
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【推荐2】设函数
在R上存在导数
,对任意的
,有
,且
时,
.若
,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f972a7a1d05b45cffb5a291f0863c7e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd4b22e50b313bf02baa4149248c114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48350c9f896c18a64f27867ca81c9be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4922345d53940e03175eaca14ef8a6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb23621b8c443bb9b460d56c6ed0a6f.png)
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