Mathematics · Matrices
If A is a 2×2 matrix and B is a 2×2 matrix, which statement is correct regarding product matrix AB?
- 1AB is a 2×2 matrix.✓
- 2AB is a 4×4 matrix.
- 3AB is always equal to BA.
- 4AB is not defined.
Correct answer
AB is a 2×2 matrix.
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