GCE Mathematics 2025 Objective — Question 18
Question 18 of 60 from the General Certificate of Education (GCE) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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If A=2x[[2,3],[1,2]] and B=[[1,0],[1,-1]], find (A+3B).
- A. [[5,3],[4,-1]]Correct
- B. [[3,0],[3,-3]]
- C. [[3,3],[2,3]]
Explanation
3B = [[3,0],[3,-3]]. Adding this to the base matrix [[2,3],[1,2]] gives [[5,3],[4,-1]] per the source's working.
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