若函数
有两个极值点
,
,且
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3686faca2bb7c4f2ad054e4017ea3f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542893790445d6d888d9ff91fd215c9c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-03-03 17:50:52
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【推荐1】若
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636a8d9e362e768e825a98afdea2bd5b.png)
A.![]() | B.![]() |
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【推荐2】函数y=f(x)的定义域为R,其导函数为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dac463bbb7375dbf8e2246f9a6f0d9.png)
,有
在
上![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
,若
,则实数t的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dac463bbb7375dbf8e2246f9a6f0d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428f639cee97b14f9ff8747d4f5b9759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95ae33722703f24430ac9744c0f2452.png)
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A.[-2,2] | B.![]() | C.![]() | D.![]() |
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【推荐3】已知函数
,则不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0339776f520fdabddab26bedaf2ae621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd308d2765bcb2471d9a733490da55e.png)
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【推荐1】已知函数
有两个不同的极值点
,
,若不等式
恒成立,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1344b8e01cbe5be4f16f5891a1ec8454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848b873cb6ee946b3092bfd3bdcab0f8.png)
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解题方法
【推荐2】函数
与函数
存在相同的极值点
,则
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d287947f2d2170d39aca4828e4f52886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f937701e84455048e4112598a65f9127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437dd2b4b2d14f778820748601a4026e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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