Test: Matrices & Determinants - 2

The matrix is invertible if

If A is a skew-symmetric matrix, then trace of A is

If then x and y will be

Matrix has a value. This statement

If  then X is equal to

If A =  are two matrices such that the product AB is a null matrix, then -is

If A is a square matrix such that AA` = I, then value of A`A is

If A is a square matrix of order n such that its elements are polynomial in x and its r-rows become identical for x = k, then

If A is a 3-rowed square matrix, then | 5 A | is equal to

In the determinant  , the ratio of the cofactor to its minor of the element – 3 is

The solution set of the equation is

If ω is an imaginary cube root of unity and x is real number, then which one of the following is a factor of 

If A is a square matrix of order 4, and I is a unit matrix, then it is true that

If then x is

The roots of the equation = 0 are

The value of determinant is

The value of