当
时,正态曲线为
,我们称其为标准正态曲线,且定义
,由此得到
________. .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f771fb9aa04e6a74b0e8634381cbab8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689d79546eb6533b08de3bc5ec98bcfe.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728272ac69a5ae4558c58883be3f9141.png)
10-11高二下·辽宁·期中 查看更多[1]
(已下线)2010-2011学年辽宁省辽师大附中高二下学期期中考试理科数学试题
更新时间:2016-11-30 21:01:38
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