Cho A là ma trận vuông cấp n có dạng:
A= ($a_{ij}$) , $a_{ij}$= i+j, i,j= 1,2,.........,n
Tính hạng của ma trận A? 

bị xóa vì bị trùng bởi Đức Vỹ 25-10-13 11:01 PM

Câu hỏi này có nội dung hoàn toàn trùng với câu hỏi đã có.

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