1 . 已知函数
,
,当
时,恒有
.
(1)求
的表达式及定义域;
(2)若方程
的解集为空集,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6dd87388af5751b11a8bf718869cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3471484b64504fc545398f52be830010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706391d44663417b5679a72f5a55cd6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b97b4c4aa110a1cf5842d0ce1de48f.png)
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名校
2 . 已知函数
.若方程
恰有七个不相同的实根,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ff1b22a5530e6692ea856d5ce9274a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725eb7e74ed572accf2c73eade0d17ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-10-22更新
|
248次组卷
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3卷引用:安徽省铜陵市第一中学2019-2020学年高一上学期12月月考数学试题