Question

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You are attempting question 1 out of 12
Suppose that B is a matrix whose third column is the sum of the first two columns, then
the third column of AB is​

Answer 1

Answer:

B is a matrix and third column of B is sum of the first two columns. We know that, ... So, we can say that the matrix's rows AB are all linear combination of the rows of B which is satisfies this lines relation. So, column third is the same combination of previous two columns of AB