Determinants Matrices Question 173

Question: If , then z is

Options:

A) purely real

B) purely imaginary

C) $ a+ib, $ where $ a\ne 0, $

$ b\ne 0, $

D) $ a+ib, $ where b = 4

Show Answer

Answer:

Correct Answer: B

Solution:

  • [b] (Taking transpose) Hence, z is purely real.