ECZ 2018 · GCE Paper 1 — Matrices
Given that C = 5-121 and D = 1-2, express CD as a single matrix.
- A. [3; 0]
- B. [7; 0]
- C. [7; 4]
- D. [3; 4]
Verified working — step 1
A (2 × 2) matrix times a (2 × 1) column gives a (2 × 1) column: each ROW of C runs down the column D - and negative times negative is positive.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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