Réponses

2013-03-08T11:26:54+01:00

a) 0 < x < 1 => 0 < x² < x
b) 0 < x < 1 = > 0 < Vx < 1 => 0 < x < Vx
c) x² < x => x^3 < x²
    d'où x^3 < x² < x < Vx