Question

What is the cross product of `[2, 1, -4]` and `[1, -4, 0]`?

Answer 1

[-16, -4, -9]

Explanation:

#| (hati, hatj, hatk, hati, hatj), (2, 1, -4,2, 1), (1, -4, 0, 1, -4) | = #

`hati{(1)(0) - (-4)(-4)} + hatj{(-4)(1) - (2)(0)} + hatk{(2)(-4) - (1)(1)} =`
`-16hati - 4hatj - 9hatk = [-16, -4, -9]`