How to prove (cd)A = c(dA). c and d are scalars. A is a matrix.?

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How to prove (cd)A = c(dA). c and d are scalars. A is a matrix.?

2007-02-03 07:42:43 · 2 answers · asked by Rosy 3 in Science & Mathematics ➔ Mathematics

2 answers

Lets denote every element of matrix A as A_ij-we assume that A_ij
is in general complex
We have dA--> d*A_ij----means that we muliply evey element of A
Now c(dA)--> c*d*A_ij is obviously equal to (c*d)(A)

2007-02-03 07:54:59 · answer #1 · answered by blazkiar 2 · 1⤊ 0⤋

the comunitive property of multiplication i believe

2007-02-03 07:46:09 · answer #2 · answered by beardedredhead7 4 · 0⤊ 0⤋