0 2.13 Consider two subspaces U, and U2, where U, is the solution space of the homogeneous equation system Alx = 0 and U2 is the solution space of the homogeneous equation system A x =0 with 13 -3 0] 1 -2 1 2 3 A1 = 2 1 3 7 -5 2 1 0 3-1 2 a. Determine the dimension of U1, U2, b. Determine bases of U, and U2. c. Determine a basis of UI nU2. A2