Question 24
Matrices and DeterminantsGiven that I3 is a unit matrix of order 3, find |I3|.
- A.−1
- B.0
- C.1
- D.2
Show the answer and explanation
Answer: C (1)
Explanation
The unit matrix has 1s on the diagonal and 0s elsewhere, so its determinant is 1 × 1 × 1 = 1.