If a matrix M = [[1, 2], [2, 1]] and N is a matrix such that M + N is a zero matrix, then N is:
If a matrix M = [[1, 2], [2, 1]] and N is a matrix such that M + N is a zero matrix, then N is:
- A. [[−1, −2], [−2, −1]]
- B. [[1, 2], [2, 1]]
- C. [[0, 0], [0, 0]]
- D. [[−1, 2], [2, −1]]
Answer: A) [[−1, −2], [−2, −1]]
Explanation: M + N = 0 implies N = −M = [[−1, −2], [−2, −1]].
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