Corretto: (0; 1), (2; 3), (3; 4), (9; 10), (1/2; 3/2), (‒1; 0), (‒2; ‒1), Errato: (1; 0), (2; 0), (3; 2), (0; 2), (0; 1/2), (1; 3/2), (10; 12), (‒2; ‒3),

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