Let p be a 3 x 3 constant matrix with real entries. it is known that tr {p} = 5, a is a real number, [i] [1] [2+ i] [2+ i] p: 0 = 4 0 , and p. 1-il = (a + 3i) 1-il. 1-1 1-1 [ 3 ] [ 3 ] find a and determine a real-valued fundamental matrix o(t) for the system y' = p. y