Find the rank of this symmetric Nx N matrix. (It would be a tridiagonal matrix if ent mositions (N, 1) and (1, N) were zeroes.) 0 0 -1 0 0 0 -1 0 0 1= 2 -1 0 0 0 T 727 -1 0 -1 : -1 2 -1 2 -1 0 2 -1 2 0 0 0 -1 0 0 0 T −1

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