If F (x, y) = (M, N) = (- 12 2 1 v2 ), (x, y) # (0, 0), then what is the value of x² + y2' x² + y2 / (N2 – My)? (a) 0 x² – y? (b) (x² + y²)² y? – x2 (c) (x² + y²)² (d) x2 + y? (e) x² + y²

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