Réponses

2013-05-16T18:18:21+02:00

1 - e^(-0,2x+1) > 0 => e^(-0,2x+1) < 1 => e^(-0,2x+1) < e^0 => -0,2x + 1 < 0 => 0,2x > 1 => x > 5