Question

If a = 2i + j - 3k, b = i - 2j + k, c = - i + j - 4k and d = i + j + k, then compute |(a × b) × (c × d)|.

Answer 1

Given that

a = 2i + j - 3k

b = i - 2j + k

c = - i + j - 4k and

d = i + j + k

Kindly see the attachment for the Detailed Answer.