ECZ 2024 · GCE Paper 1 — Matrices
Given that A = 32 and B = 1−2, find AB.
- A. 3624
- B. −1
- C. 3−6−24
- D. 3−62−4
Verified working — step 1
A is 2 × 1 and B is 1 × 2, so AB is a 2 × 2 matrix: row i of A times column j of B. AB = matrix(3×1, 3×(−2); 2×1, 2×(−2)) = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question