def __str__(self):
if self.b<=0:
sep1 = ''
else:
sep1 = '+'
if self.c<=0:
sep2 = ''
else:
sep2 = '+'
if self.a == 1:
a1 = ''
else:
a1 = str(suppr0(self.a))
if self.b == 1:
b1 = ''
else:
b1 = str(suppr0(self.b))
if self.b == 0:
deg1 = ''
b1 = ''
else:
deg1 = 'x'
return a1 + 'x^2' + sep1 + b1 + deg1 + sep2 + str(suppr0(self.c))
def __init__(self, a, b, c):
if a == 0:
print "Erreur de définition ! a doit être différent de 0."
self.a = a
self.b = b
self.c = c
self.delta = suppr0(b**2 - 4*a*c)
if self.delta > 0:
self.signedelta = "strictement positif"
self.nbrac = 2
elif self.delta < 0:
self.signedelta = "strictement négatif"
self.nbrac = 0
else:
self.signedelta = "nul"
self.nbrac = 1