Solve matrix

Matrix multiplication is distributive over matrix addition

Solve by matrix method : 2x+y=5 x-y = 1

Given matrix B=[{:(,1,1),(,8,3):}] . Find the matrix X if, X=B^2-4B. Hence, solve for a and b given X[{:(,a),(,b):}]=[{:(,5),(,50):}] .

Which of the following is a symmetric matrix? (A) a null matrix (B) a triangular matrix (C) an idenity matrix (D) a diagonal matrix

If A is an invertible matrix and B is a matrix, then

Which of the following is a triangular matrix? (A) a scalar matrix (B) a lower triangular matrix (C) an upper triangular matrix (D) a diagonal matrix

If A and B are symmetric matrices, then A B A is (a) symmetric matrix (b) skew-symmetric matrix (c) diagonal matrix (d) scalar matrix

Transpose of a column matrix is a column matrix.

If A is a row matrix as well as a column matrix then what is the order of A ?

The matrix A= [[0, 0, 4] ,[0 ,4, 0] ,[4 ,0, 0]] is a (a) square matrix (b) diagonal matrix (c) unit matrix (d) none of these