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其实,就是用直角坐标表示向量来计算物理题也很简单

Floor 1 巨大八爪鱼 12/21/14 13:06
rt
Floor 2 巨大八爪鱼 12/21/14 13:07
极坐标式的角度比较麻烦。
但直角坐标式难以看出向量的长短和方向,计算复数积也比较麻烦。

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