题型:填空题
难度:0.85
引用次数:464
题号:19576819
函数
的自变量
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d177704474d007d9ddbfb9ce41633af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
更新时间:2023-07-14 10:19:14
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中,是二次根式的有________________ (填写序号).
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