Solved: Prove Theorem 2(b) and 2(c). Use the row–column
Chapter 2, Problem 29E(choose chapter or problem)
Problem 29E
Prove Theorem 2(b) and 2(c). Use the row–column rule. The (I, j)-entry in A(B + C) can be written as
Theorem 2(b): A (B + C) = AB + AC
Theorem 2(c): (B + C)A = BA + CA
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