If A = [[1, 2], [3, 4]] and B = [[2, -1], [0, 5]], what is A + B?
Correct answer: A. [[3, 1], [3, 9]]
- A. [[3, 1], [3, 9]]
- B. [[2, 2], [3, 20]]
- C. [[3, -1], [3, 9]]
- D. [[1, 1], [3, 5]]
Explanation
Matrix addition is performed by adding entries in corresponding positions. Thus the entries are 1 + 2, 2 + (-1), 3 + 0, and 4 + 5.
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