Réponses

2013-03-10T23:13:10+01:00
2013-03-11T00:23:30+01:00
Df/DC =de/dB =fe/cb
3/DC = 2/5= fe/4,5

DC= 3x5/4,5 = 3,333
Fe= 4,5x2/5= 1,8