名校
1 . 设
,已知函数
.
(1)当
时,求不等式
的解集;
(2)设函数
,若方程
在区间
上有实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a61350388ba0eb5d0847a3b7195e144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2e3bdad080ade5f9cae071d94644e3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d86b4ad722d7b720603eba9d330fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465bc146b0862872f0f3dba8947c3ae7.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0cf3e48612c75512e71b6bbc3bdcd44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf22c3355e905e9df956d8279a8d7c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc68350d4a250d83aef73d7e2794816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808426112792e9a80a06f611b60827a4.png)
您最近一年使用:0次
2021-08-24更新
|
1102次组卷
|
3卷引用:陕西省渭南市韩城市2020-2021学年高二下学期期末文科数学试题
解题方法
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2649e904569ea0d2b6aec76431e39b.png)
,不等式
的解集为
.
(1)若
,求集合
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2649e904569ea0d2b6aec76431e39b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc876c76ade5694eef670e15d1b05159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608a57caffde627dbf140ca22a2ff8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba484d4ab4ff2f4978d97e339185ee6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次