Réponses

2013-06-02T08:22:17+02:00
Alors
a=-1
b=2
c=3
alfa = -b/2a= -2/-2=1
beta = f(alfa)=-1au carré+2*1+3=4
forme canonique :
a(x-alfa)aucarré+beta
=-(x-1)aucarré+4