If a matrix A has m rows and n columns, then order of A is:
Any matrix of order m x 1 is called:
For the square matrix A = [aᵢⱼ], if all aᵢⱼ = 0 for i ≠ j and all aᵢᵢ = k (non-zero), then A is called:
det [[1, 0], [5, 6]] − det [[1, 2], [3, 4]] =
If AB = BA, then which one is true, where A and B are square matrices:
If A = [- 7] , then |A| is equal to:
Let A = [aᵢⱼ] be a square matrix. Then cofactor of aᵢⱼ is equal to:
For any triangular matrix A, |A| is equal to:
A square matrix A = [aᵢⱼ] for which all aᵢⱼ = 0 when i < j, then A is called:
A triangular matrix is always a:
A square matrix Ā is skew-symmetric if:
A square matrix A is a Hermitian matrix if:
Each diagonal element of main diagonal of a skew Hermitian matrix must be:
If det [[a, b], [0, 7]] = det [[2, 3], [1, - 9]] then
The number of non-zero rows in echelon form of a matrix is called:
If A is any square matrix and A = −Aᵗ then A is a
If A is an idempotent matrix then:
The cofactor A₂₂ of the matrix [[1, 2, 4], [−1, 2, 5], [0, 1, −1]] is:
