Matrix Questions: Addition, Inverse Date: 8/6/96 at 21:31:52
From: Anonymous Subject: Matrix Questions: Addition, Inverse
Hello, Please tell me how to solve these problems: i) (1 2) +
(-1 -2) =? ii) If A = (3 4), is it A inverse? Date: 8/7/96 at
9:2:54 From: Doctor Anthony Subject: Re: Matrix Questions:
Addition, Inverse i) (1 2) + (-1 -2) =? When you add matrices,
(or in this case row vectors), you simply add the corresponding
terms in each matrix. So (1 2) + (-1 -2) = (1-1 2-2) = (0 0) ii)
If A = (3 4), is it A inverse? To have an inverse, A must be a
square matrix, i.e. the same numbers of rows and columns.
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