数学期望求解方法两例

SHU XUE JIAO XUE ›› 2025, Vol. 0 ›› Issue (4) : 41-42.

SHU XUE JIAO XUE ›› 2025, Vol. 0 ›› Issue (4) : 41-42.

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编辑单位：《数学教学》杂志编辑部
出版单位：华东师范大学出版社有限公司
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