Group Activity Let A and B be matrices and c and d scalars. Prove that the following
Chapter 7, Problem 7.1.1.143(choose chapter or problem)
Group Activity Let A and B be \(m \times n\) matrices and c and d scalars. Prove that the following properties are true.
\(\begin{array}{l}\text{(a) } c(A+B)=c A+c B\\\text{(b) } (c+d) A=c A+d A\\\text{(c) } c(d A)=(c d) A\\\text{(d) } 1 \cdot A=A\end{array}\)
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