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

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Calcule h(-1) et h(3,5):

h(-1) = -6 * (-1)

= 6

h(3,5) = -6 * 3,5

= -21

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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

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* = multiplication

Bonne journée.