Question

4) (a) show that a = 3 i -2 j-k and b = -6i+4j+2 k are parallel​

Answer 1

Explanation:

to show that two vectors are parallel their scalar product should not be equal to zero

(→a).(→b)=(3i-2j-k).(-6i+4j+2k) is not equal to 0

-12-8-2 is not equal to 0

-22 is not equal to 0

so these are parallel