1. For the 3-node triangular graph in the figure following, write the 3 by 3 incidence matrix A. Find a solution to Ax = 0 and describe all other vectors in the nullspace of A. Find a solution to ATy = 0 and describe all other vectors in the left nullspace of A. edge 1 node 2 node 1 edge 2 edge 3 node 3 x2 Y1 Y4 x1 Y5 X4 Y3 Y6 Y2 x3

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