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...Matrices and determinants matrix a rectangular array of mn numbers in the form m horizontal lines called rows n vertical columns is order by written as an types zero or null each whose elements square which number equal to say diagonal if all ij except those leading are i e for j other words adiag nn unit every non element identity thus aa when algebra addition let b be two then sum defined only same new c obtained adding corresponding subtraction we mean find subtract from multiplication can multiplied transpose interchanging denoted ii example symmetric said that provided ji skew orthogonal minor p am removed remaining submatrix left determinant etc minors iii...