Ano ang cross product ng [1,2,1] at [3,1, -5]?

Ano ang cross product ng [1,2,1] at [3,1, -5]?
Anonim

Sagot:

# 1,2,1 xx 3,1, -5 = -11, 8, -5 #

Paliwanag:

Sa pangkalahatan:

a_x, b_y, b_z = abs ((a_y, a_z), (b_y, b_z)), abs ((a_z, a_z), (b_z, b_x)), abs ((a_x, a_y), (b_x, b_y)) #

Kaya:

# 1,2,1 xx 3,1, -5 #

(1, -5)), abs ((1, 1), (-5, 3)), abs ((1, 2), (3,1)) #

#= (2*-5)-(1*1), (1*3)-(1*-5), (1*1)-(2*3)#

#= -10-1, 3+5, 1-6#

#= -11, 8, -5#