[高中數學][專題特輯] Ep1 西格瑪 [楊翰數學]
Synopsis
數學上常常處理"連加"的問題， 於是有了"西格瑪"這個符號！ 這部影片讓我們來認識一下何謂"西格瑪"吧！ ---------- 下載課程 ...
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