My homework frequently has problems in this format. Can someone tell me why III

Question

My homework frequently has problems in this format. Can someone tell me why III is correct? I realize 'i' represents the row number and 'j' represents the column number but I still don't understand where 11/2 comes from. Obviously my 'online textbook' is of very little help and has NO example problems of this type. ( 3 1 -2 3 2 1 -4 -6 -6 5 -2 -1 2 -2 3 -5 ) is a square matrix ( 2 -4 -5 0 0 -3 -2 1 -1 -1 -5 5 ) is a (4 Times 3) matrix A (3 Times 3) matrix A = (aij) is defined by aij = j / i for 1 i, j 3, then the sum of the entries in column 3 is 11 / 2 only III is right All are correct

Explanation / Answer

column elements are = 3/1+3/2+3/3 = 3(11/6) = 11/2

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