Studia il fascio di parabole di equazione y = (3k — 2) x2 + 2 (3 — 5k) x — 4 + 7k e determina per quale valore di k la parabola del fascio:
a) passa per il punto P(2; — 3);
b) ha il vertice sull’asse y.
Esercizio 15 – Fascio di parabole
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