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数学 > 假设检验 > Flashcards

假设检验 Flashcards

(0 cards)

数学 (6 decks)

理解单位向量、方向数与方向余弦、向量的坐标表达式，掌握用坐标表达式进行向量运算的方法.

空间平面方程和直线方程

平面与平面、平面与直线、直线与直线之间的夹角，相互关系(平行、垂直、相交)解决问题

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