JEE Main & Advanced
Mathematics
Determinants & Matrices
Question Bank
Special types of matrices, Transpose, Adjoint and Inverse of matrices
question_answer
Which of the following (i) Adjoint of a symmetric matrix is symmetric, (ii) Adjoint of a unit matrix is a unit matrix, (iii) \[A(adj\,A)=(adj\,A)\]\[A=\,|A|I\]and (iv) Adjoint of a diagonal matrix is a diagonal matrix, is/are incorrect