# File test/tc_matriz.rb, line 9
        def setup
        @m1=Matriz_dispersa.new([[1,0,0],[0,1,0],[0,0,0]]) #dispersa
        @m2=Matriz_densa.new([[1,2,1],[2,1,3],[3,5,4]]) #densa
        @m3=Matriz_dispersa.new([[1,0,0],[0,0,0],[1,0,0]]) #dispersa
        @m4=Matriz_densa.new([[2,3,1],[9,3,4],[2,7,5]]) #densa
        end