ECZ 2021 · GCE Paper 1 — Matrices
Given that P = 2−134 and Q = −23, find PQ.
- A. −16
- B. −76
- C. 7−6
- D. −7−6
Verified working — step 1
A (2 × 2) matrix times a (2 × 1) column gives a (2 × 1) column: each ROW of P runs down the column Q.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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