已知函数
,
,
.
(1)求
的极值;
(2)若存在
,对任意的
,使得不等式
成立,求实数
的取值范围.(
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb147fc24b8fb92a53d7ebf6e16133e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eef0178e8ab86f8f3f95ca12a70853ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7b5582e1931243dbb90b7591137f23.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7192c7ee3cec2f724ee10e3bd4d4002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07edb35004e7371999204b68ca8c95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d86f752ceacc975419b436f8412fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0891a54fcf7ccbd9e6b8680944bc580d.png)
2023·全国·模拟预测 查看更多[1]
(已下线)2023年普通高等学校招生全国统一考试数学预测卷(八)
更新时间:2023-02-17 18:25:47
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【推荐1】已知函数
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(1)当
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【推荐2】已知函数f(x)=(1﹣sinx)ex.
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【推荐3】已知函数
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(1)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c9b4c60a22fdcdf37494e67fd336b6.png)
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(2)设函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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【推荐1】设函数f(x)=
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(1)证明:当x>1时,f(x)>0;
(2)讨论g(x)的单调性;
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解题方法
【推荐2】已知函数
,
,
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(1)当
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(2)若不等式
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恒成立,求a的取值范围.
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(1)当
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(2)若不等式
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【推荐3】已知函数
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cea89b551fb88404f83a6fdebfd33f0.png)
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【推荐1】已知
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(1)当
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(2)求证:当且仅当
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(3)已知存在
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解答题-问答题
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较难
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名校
【推荐2】已知函数
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(1)当
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(1)当
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