名校
1 . “
”是“
”的______ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4922b8d207b94816e08e8fd929dde3f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3238e3c90f2f6ae114791e38c9f6c8.png)
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名校
2 . 点
到直线
的距离等于4,且在
表示的平面区域内,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c423d27adb86770a4141d13381ec33ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7f7deff8ca984127a0cc25d1d3139a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1668b6733ca921cf08bf23d4d86fec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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