2 - 3 O 2 1 -4 -1 3 3) (25) For a 3x4 matrix A= 3 12 -13 2 1 -4 -14 16 -2 -2 a Find a basis and the dimension of the row space and the column space of A b) Find an orthonormal basis and the dimension of the null space of A C) Find an orthonormal basis and the dimension of the left null space of A Conclusion: Rank, nullity of A? Hint: Follow the example 5 of 4.8 e) Find the left null space of A. Recall that the Left Null Space of a matrix A is the solution X of A X = 0