public class Polynome implements Fonction { private double a; private double b; private double c; public Polynome(double a, double b, double c) { this.a = a; this.b = b; this.c = c; } public double f(double x) { return a*x*x + b*x + c; } public String toString() { return "P(x) = "+a+" x^2 + "+b+" x + "+c; } }