নির্ণায়ক ও রৈখিক সমীকরণ জোট
Determinant of a square matrix up to 3x3, properties of determinants, minors, cofactors, evaluation by row/column expansion, application to area of triangle, adjoint of a matrix, inverse of a matrix via adjoint, and solving system of linear equations by Matrix method and Cramer's rule.
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