Problem 1: We say a nxn matrix A is symmetric when for all i, j=1,,n A(i,j)=A(j,i) with ij. Write a MATLAB code that will test if a matrix is symmetric or not. The code will return the number 1 if the matrix is symmetric and 0 if it is not. For a test example, ask the user for a 3x3 matrix input and name the matrix as A (10 points).