trinome.py

Created on July 08, 2019

371 Bytes

Retourne les racine réelles du trinome a * x ** 2 + b *x + c

from math import sqrt

def racineTrinome(a, b, c):
    """Retourne les racine réelles du trinome a * x ** 2 + b *x + c"""
    delta = b ** 2 - 4 * a * c
    if delta > 0:
        x1 = (-b - sqrt(delta)) / (2 * a)
        x2 = (-b + sqrt(delta)) / (2 * a)
        return (x1, x2)
    elif delta < 0:
        return ()
    else:
        return (-b/(2*a),)