Determinare l'equazione della circonferenza che passa per i punti A(0,3), B(-4,1) e C(1,1)
Scrivere le condizioni di appartenenza dei tre punti alla circonferenza di equazione generica [img]data:image/png;base64,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[/img], impostare il sistema di tre equazioni nelle tre incognite a,b,c.[br]L'equazione cercata è [math]x^2+y^2+3x-2y-3=0[/math]