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
The sizes decide the shape of the product: a (2 × 1) matrix times a (1 × 2) matrix gives a full 2 × 2 grid - each entry of the column multiplies each entry of the row.The full step-by-step working and final answer, plus the video lesson for this topic, 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.
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