名校
解题方法
1 . 由不等式组
确定的平面区域记为
,
确定的曲边梯形记为
,在
中随机取一点,则该点恰好在
内的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfe90e79aa62e442ceaacfdb0050161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deebd2c36a5e644a566f1980091359bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ef6af3c167cc02d49b8e58b2d635b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e32039addb008103a2a8344225214a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deebd2c36a5e644a566f1980091359bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e32039addb008103a2a8344225214a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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