I5111 all "' \"In 6'21 0-22 mm 1.1 Consider matrix A 2 \"ml \"m2 ' ' ' \"Hm Indicate if the following statements are true or false. 1.1.1 A is a square matrix if m = n and a rectangular matrix ifm # H. 1.1.2 An m x 1 matrix is called a row rector. 1.1.3 An upper triangular matrix is one that has all its elements above the diagonal equal to zero