阿摩線上測驗
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阿摩線上測驗
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6. (5 points) Assume A, B, and C are respectively m✕p, p✕q, and q✕n matrices, and M = ABC. Let Mkl = akcl for 1 ≤ k ≤ p and 1 ≤ l ≤ q, here ak and cl respectively denote the k-th column vector of A and the I-th row vector of C. Prove that