已知
是方程
的两个实根,且不等式
对任意
恒成立,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d6c9d20a5b1abf77d4d70d5ac9ba77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f6a122db673b7f78cf66c44e934b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-10-01 22:46:29
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