Réponses

  • Utilisateur Brainly
2013-12-13T17:48:28+01:00
A=4*(0,5^(x+1)-0,5^(x+2))=4*(0,5^(x+1)-0,5^(x+1)*0.5)
=4*0,5^(x+1)*(1-0,5)=4*0,5^(x+1)*0,5
=2*0,5^(x+1)