A part of Class 12 Math NCERT, you will learn important formulas and tips in Matrices. Matrix multiplication is discussed. You will learn how to calculate inverse of a matrix and invertible matrices. Matrix definition and Determinant obtained from a matrix is explained. Transpose of a matrix, identity matrix, order of a matrix is taught. You will learn about symmetric matrices, diagonal and upper triangular matrix and determinant of a 3 by 3 matrix.