clc;
a=[1,2,0,3,0;0,0,1,4,0;0,0,0,0,1];
disp("A=",a)
disp("Te subspace of r^5 spanne dby a1,a2,a3(row vectors of A) is called row space of A")
a1=a(1,:)
a2=a(2,:)
a3=a(3,:)
disp("a1=",a1)
disp("a2=",a2)
disp("a3=",a3)
disp("And it is also the row space of matrix B")
B=[1,2,0,3,0;0,0,1,4,0;0,0,0,0,1;-4,-8,1,-8,0]
disp("B=",B)