Question

if the cross product of AandB is 8i-14j+k and the difference of A and B is 5i+3j+2k,then find the value of A AND B.

Answer 1

since Ax(A-B) = AxA - AxB = -AxB, just solve

Ax(5i+3j+2k) = -8i+14j-k
I think determinants would be the easiest way to do that
and then B = A - (A-B)