If `A` is non-diagonal involuntary matrix, then `A=I=O` b. `A+I=O` c. `A=I` is nonzero singular d. none of these

If A is a singular matrix,then adj A is a. singular b.non singular c.symmetric d.not defined

If A is non-singular matrix and (A+I)(A-I) = 0 then A+A^(-1)= . . .

If B is an idempotent matrix,and A=I-B then a.A^(2)=A b.A^(2)=I c.AB=O d.BA=O

If A is non-singular A^(2)-5A+7I=0 then I=

If A is a non-singularmatrix such that A^(2)-A+I=O," then: "A^(-1)=

If A is a non-singular square matrix such that A^(2)-7A+5I=0, then A^(-1)

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

Consider the following statements 1. If A' = A, then A is a singular matrix, where A' is the transpose of A. 2. If A is a square matrix such that A^(3) = I , then A is non-singular. Which of the statements guven above is/are correct ?

If A is an invertible symmetric matrix the A^-1 is A. a diagonal matrix B. symmetric C. skew symmetric D. none of these

Consider the following statements: I. If A=A. then A is singular matrix where A is the transpose of A. II. If A is a square matrix such that A^(3)=1 , then A is non-singular. Which of the above statement is/are correct ?