Final answer:
The cross product of the vectors a = i - 2k and b = jk is -3kĵ.
Step-by-step explanation:
To find the cross product of the vectors a = i - 2k and b = jk, we can use the distributive property and the rules for the cross multiplication of unit vectors.
First, we multiply the vector components:
a × b = (i - 2k) × (jk) = i × jk - 2k × jk = i × j × k - 2k × jk = (i × j)k - 2(j × k)k = -k - 2ĵk = -k - 2kĵ = -3kĵ
Therefore, the cross product of a and b is -3kĵ.