Answer: In 1418 assume the entries of all matrices are real numbers
Chapter 10, Problem 16(choose chapter or problem)
Prove that matrix multiplication is associative: If A, B, and C are any \(m \times k, k \times r\), and \(r \times n\) matrices, respectively, then (AB) C = A (BC).
Text Transcription:
m times k, k times r
r times n
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