Same chapter2 marksDifficulty: Easy
If A = [[1, −2], [3, 0]], find 2A.
Matrices
3 marksDifficulty: Easy
If A = [[2, 0], [−1, 3]] and B = [[1, 4], [2, −1]], find A + B and A − B.
Original Khojo Papers practice question — not from a past board paper.
Answer
A + B = [[3, 4], [1, 2]] and A − B = [[1, −4], [−3, 4]]
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Matrices of the same order are added and subtracted element by element.
Related questions
From the same topic and chapter, at a similar level.
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If A is a 2 × 3 matrix and B is a 3 × 4 matrix, state the order of AB.
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The order of the matrix [[1, 2, 3], [4, 5, 6]] is:
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If A = [[3, 0], [0, 3]], find A2.
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Same chapter1 markDifficulty: Easy
The product of a 2 × 3 matrix and a 3 × 2 matrix is a matrix of order:
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Same chapter3 marksDifficulty: Medium
Find the product [[1, 2], [3, 4]] × [[2, 0], [1, 3]].
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