Algorithmique

# -*- coding: utf-8 -*-
"""
Created on Thu Sep 21 11:10:11 2017

@author: vmahout
"""

import math

def Quadri(a,b,c) :

    Det = (b**2)-4*a*c
    V1 = (-b-math.sqrt(Det))/(2*a)
    V2 = (-b+math.sqrt(Det))/(2*a)

    return (V1,V2)



def Quadribis(a,b,c) :

    Det = (b**2)-4*a*c
 
    if (Det >= 0) : 
        V1 = (-b-math.sqrt(Det))/(2*a)
        V2 = (-b+math.sqrt(Det))/(2*a)
    else :
        V1 = -b/(2*a)
        V2 = (math.sqrt(-Det))/(2*a)
        

    return (V1,V2)




R1,R2 = Quadribis(1,2,4)
print('Les deux racines valent respectivement {0:.2f} et {1:.2f}'.format(R1,R2))