解题方法
1 . 若不等式
对任意
恒成立,则
的取值范围是 _____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9352f36605ea6e77bc34931071fabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2428921c82d2ace53ade031fa21fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
14-15高二上·河南许昌·期末
解题方法
2 . 下列结论中①函数
有最大值
②函数
有最大值
③若
,则
正确的序号是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a6734e3ca36bcf4feb3c5c6057ec87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca8b26c3ad6d892590290a2304126bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2266554539076f9bda3cf857bba03d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08263b4226e2dbb7f933a4e05309099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f3bf5b56a82fcaaa89e10b5565ade7.png)
您最近一年使用:0次