Question

Which of the following is a diagonal matrix?

O
2
0
0 -42
0
0
1
6
0
0
16 -7.5
0
0
3.5 -18
0 9
-4
0
0
0
-22 0
0 7.5
0
0 7.5
0-22 0
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Answer 1

Answer: the second one

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