Ano ang cross product ng [-1, 2, 2] at [4,3,6]?

Ano ang cross product ng [-1, 2, 2] at [4,3,6]?
Anonim

Sagot:

#6,14,-11#

Paliwanag:

Dahil ang cross product ay distributive, maaari mong "palawakin" ito

# (- hati + 2hatj + 2hatk) xx (4hati + 3hatj + 6hatk) #

# = (-hati) xx (4hati) + (-hati) xx (3hatj) + (-hati) xx (6hatk) #

# + (2hatj) xx (4hati) + (2hatj) xx (3hatj) + (2hatj) xx (6hatk) #

# + (2hatk) xx (4hati) + (2hatk) xx (3hatj) + (2hatk) xx (6hatk) #

# = 0 - 3hatk + 6hatj #

# - 8ka + 0 + 12hati #

# + 8hatj - 6hati + 0 #

# = 6hati + 14hatj - 11hatk #