Determinant of a matrix of order 3 × 3

Determinant of matrix order >=4

If D is the determinant of a square matrix A of order n, then the determinant of its adjoint is

Determinant of order 3

Let A be a square matrix of order 3 whose all entries are 1 and let I_(3) be the indentiy matrix of order 3. then the matrix A - 3I_(3) is

If AneB, AB = BA and A^(2)=B^(2) , then the value of the determinant of matrix A+B is (where A and B are square matrices of order 3xx3 )

Introduction |Order of determinant|Determinant of Matrix |Properties of Determinant |Previous year questions |Area of a Triangle

Introduction |Order of determinant|Determinant of Matrix |Properties of Determinant |Previous year questions |Area of a Triangle

If I_3 denotes identity matrix of order 3xx3 , write the value of its determinant.