在区间
上随机取一个数
,使
的值介于
到1之间的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e51b2fb9409bd4790ca95eb01fa8d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
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更新时间:2017-06-02 13:05:26
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解题方法
【推荐2】已知集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f2a9f9b20c4e7027b0977511eddb44.png)
,在区间
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