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平面向量的数量积公式
巨大八爪鱼
武林盟主 二十一级
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Floor 1 Posted at: 12/18/14 23:45
xvec A · yvec B = xycos(A - B)
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Clicks: 1256 Replies: 0
Author: 巨大八爪鱼
Last reply: 巨大八爪鱼
Last reply time: 12/18/14 23:45
Good area: 向量公式
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