是兩個向量相乘,點乘還是叉乘?
點乘=1*5+2*6+3*7=38
叉乘有順序的,[1 2 3]叉乘[5 6 7]=[2*7-3*6 3*5-1*7 1*6-2*5] (注意書寫順序就是計算順序)
[5 6 7]叉乘[1 2 3]=[6*3-7*2 7*1-3*5 5*2-6*1]
如何求矩陣[123] 乘以[567] 求具體過程,456 789
如何求矩陣[123] 乘以[567] 求具體過程,456 789
數(shù)學(xué)人氣:171 ℃時間:2019-11-22 14:09:08
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