If `A` is a matrix such that `A^2+A+2I=Odot,` the which of the following is/are true? A is non-singular A is symmetric A cannot be skew-symmetric `A^(-1)=-1/2(A+I)`

If A is a matrix such that A^(2)+A+2I=O the which of the following is/are true? A is non-singular A is symmetric A cannot be skew- symmetric A^(-1)=-(1)/(2)(A+I)

If A is a matrix such that A^2+A+2I=Odot, the which of the following is/are true? (a) A is non-singular (b) A is symmetric (c) A cannot be skew-symmetric (d) A^(-1)=-1/2(A+I)

If A is a matrix such that A^2+A+2I=Odot, the which of the following is/are true? (a) A is non-singular (b) A is symmetric (c) A cannot be skew-symmetric (d) A^(-1)=-1/2(A+I)

If A is matrix such that A^(2) +A + 2I = O then which of the following is not true ?a)A is symmetric b)A is non - singular c) |A| ne O d) A^(-1) = - (1)/(2) (A+ I)

If a non-singular matrix A is symmetric ,show that A^(-1) is also symmetric

A is a symmetric matrix or skew symmetric matrix. Then A^(2) is

Write a 2xx2 matrix which is both symmetric and skew-symmetric.

Write a 2xx2 matrix which is both symmetric and skew-symmetric.