Question

If vector a = vector(3i + 2j - 4k), vector b = vector(5i - 3j + 6k), vector c = vector(5i - j + 2k), find

(i) vector(a x (b x c))

(ii) vector((a x b) x c) and show that they are not equal.

Answer 1

(i) vector(a x (b x c))

(ii) vector((a x b) x c)