What is the cross product of #[1, -2, -3]# and #[1, 3, 4]#?
1 Answer
Nov 14, 2016
#[1, -2, -3] xx [1, 3, 4] = abs((i, j, k),(1, -2, -3),(1, 3, 4))#
#color(white)([1, -2, -3] xx [1, 3, 4]) = (-8+9)i+(-3-4)j+(3+2)k#
#color(white)([1, -2, -3] xx [1, 3, 4]) = [1, -7, 5]#