Inverse of a Matrix using Adjoint Matrix

Inverse of matrices using adjoint properties

Minors and Cofactors |Adjoint of a matrix|Properties of adjoint |Previous year questions |Inverse of a Matrix |Solution of system of linear equations

Transpose OF a matrix || Adjoint OF a matrix

determinant OF matrix || adjoint OF matrix

Which of the following is/are incorrect? (i) adjoint of a symmetric matrix is symmetric (ii) adjoint of a unit matrix is a unit matrix (iii) A (adj A)=(adj A)A=absAI (iv) adjoint of a diagonal matrix is a diagonal matrix

The inverse of a diagonal matrix is a. a diagonal matrix b. a skew symmetric matrix c. a symmetric matrix d. none of these

Let B is an invertible square matrix and B is the adjoint of matrix A such that AB=B^(T) . Then