Chapter 3. Matrices - Trinity College Dublin
24 32 0 56 3 5 We see that if we multiply by k = 0 we get a matrix where all the entries are 0. This has a special name. The m n matrix where every entry is 0 is called the m n zero matrix. Thus we have zero matrices of every possible size. If X is a matrix then we can say X +0 = X if 0 means the zero matrix of the same size as X.
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