a) (4 pts) Find the basis for the null space of the matrix below 1 2 0 1 A = 2 4 1 4 3 6 3 9 b) (4 pts) Use the Gram-Schmidt process to create an orthonormal basis from the basis found in part a). . For full (or any) credit, show the main steps of your work and your reasoning. You need to explain how you know that the vectors found in part a) form a basis for null(A). You may use Matlab to check your answer for this question, but the work you show must be done by hand.