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Q. |
Which of the following is NOT correct (A, B and C are matrices) |
A. | A∙B = B∙A |
B. | A∙B∙C = (A∙B) ∙C = A∙ (B∙C) |
C. | C(A+B) = C∙A + C∙B |
D. | 1 A = A 1 |
Answer» A. A∙B = B∙A |
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