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10 questions from this quiz
2×32 \times 32×3
When they have the same order
Multiplying each element by the scalar
No, middle numbers don't match
3×43 \times 43×4
No, generally AB≠BAAB \neq BAAB=BA
Swaps rows and columns
5×35 \times 35×3
BTATB^T A^TBTAT
B×BB \times BB×B (if BBB is square)
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