1 . 已知
,
,O为坐标原点,若在抛物线
上存在点N,使得
,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13747fa9a42164caebe2c9b7c5d06d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd357b09ef893323574d0173152be6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41c60952b48311df7191eb14ee14ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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2022-03-26更新
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548次组卷
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6卷引用:河南省新乡市2021-2022学年高三下学期第二次模拟数学(理科)试题