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高二数学（人教B版）-离散型随机变量的数学期望与方差（2）

视频地址：https://video.cache.bdschool.cn/vd/5e45012c15a6c5eb7549ed0e32a176b5.mp4
附件：0622高二数学（选修-人教B版）-离散型随机变量的数学期望与方差（2）-1教案.docx
附件：0622高二数学（选修-人教B版）-离散型随机变量的数学期望与方差（2）-2PPT.pptx
附件：0622高二数学（选修-人教B版）-离散型随机变量的数学期望与方差（2）-3学习任务单.docx

19 views Jul 15, 2021

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