已知方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1db4fb8c3814d4fbc848293205dc26f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5af1a4af4c91de91777cf0dc2f9ff6d.png)
有唯一实数根,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1db4fb8c3814d4fbc848293205dc26f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5af1a4af4c91de91777cf0dc2f9ff6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363df9127fb019f87ec53470c50dcc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2017-11-21 11:30:35
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