Bonjour,
h : x → -6x OU h(x) = -6x
Détermine les images, par la fonctions h :
h(0) = -6 * 0
= 0
h(-5) = -6 * (-5)
= 30
h(1/3) = -6 * 1/3
= -6/3
= -2
------------------------------------------------------------------
Calcule h(-1) et h(3,5):
h(-1) = -6 * (-1)
= 6
h(3,5) = -6 * 3,5
= -21
------------------------------------------------------------------
Déterminer les antécédents :
h(x) = 24
-6x = 24
6x = -24
x = -24/6
x = -4
h(x) = -42
-6x = -42
6x = 42
x = 42/6
x = 7
h(x) = -3/4
-6x = -3/4
6x = 3/4
x = (3/4)/6
x = 3/4 * 1/6 = 3/24 = 1/8 = 0,125
-----------------------------------------------------------------
* = multiplication
Bonne journée.
