Ano ang cross product ng [2, -1, 4] at [5, 2, -2]?

Ano ang cross product ng [2, -1, 4] at [5, 2, -2]?
Anonim

Sagot:

# <2, -1,4> xx <5,2, -2> = <-6,24,9> #

Paliwanag:

Maaari naming gamitin ang notasyon:

# ((2), (- 1), (4)) xx ((5), (2), (- 2)) = | (ul (hat (i)), ul (hat (j)), ul (hat (k))), (2, -1,4), (5,2, -2) | #

# "" = | (-1,4), (2, -2) | ul (hat (i)) - | (2,4), (5, -2) | ul (hat (j)) + | (2, -1), (5,2) | ul (hat (k)) #

(4-8) ul (hat (k)) - (-4-20) ul (hat (j)) + (4 + 5)

# "" = -6 ul (sumbrero (i)) +24 ul (sumbrero (j)) +9 ul (sumbrero (k)) #

# ' ' = ((-6),(24),(9)) #