CBSE Class 12th Notes of Matrices and Determinants. What is Matrix. Order of the Matrix. Position of Element. Types of Matrices. Row Matrix. Column Matrix. Square matrix. Identity or Unit Matrix. Diagonal Matrix. Scalar Matrix. Null Matrix or Zero Matrix. Operations of Matrices. Additions and Substractions of Matrices. Multiplication of Matrices. Transpose of a Matrix. Symmetric Matrix. Skew Symmetric Matrix. Elementary Row Transformation. Square Matrix. Determinants. Evaluation of Determinant. Properties of Determinants With examples. Area of a Triangle. Minors and cofactor. Minors of a Matrix. Adjoin of a matrix. Inverse of a Matrix solutions of system of equations using matrix method.