Réponses

2013-10-06T21:53:07+02:00
Bonsoir
a = 1.3 x 10^4
b = 5.7 x 10^-4
c = 7 x 10^-1
d = 1.066 x 10^-2

6 x 10² sur 5 x10^4 x 24 x 10^-7
= 6 x 10² sur 120 x 10^-3
= 0.05 x 10^5 = 5 x 10^7