Q1: Define the 4 x 4 matrix, A. A = 13 4 4 3; 4 5 6 7:5 6 7 4:4 5 6 71 Find the content of the following matrices and check your results for content using Matlab. a) a = g(:,2) b) a = g(4.:) c) a = g(3:4,1:3) d) a = g(1:2:4,:) e) a=sum(g)