Same chapter3 marksDifficulty: Medium
Find x and y if [[x, 3], [2, y]] = [[4, 3], [2, 5]].
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3 marksDifficulty: Medium
If A = [[2, 1], [0, 3]] and B = [[1, −1], [2, 0]], find the product AB.
Original Khojo Papers practice question — not from a past board paper.
Answer
AB = [[4, −2], [6, 0]]
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Multiplying row by column: the entries are (2×1 + 1×2) = 4, (2×−1 + 1×0) = −2, (0×1 + 3×2) = 6 and (0×−1 + 3×0) = 0.
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