complete le tableau suivant 1 100 a) - 5 2 0 0,00 2 2 2 Indique fonction 11 12 wf- 7 bonjour quelqu'un pourrait m'expliquer comment faire cette exercice je suis

Réponse :

Explications étape par étape

Bonjour

f(x) = 5x - 3

5x - 3 = 7

5x = 7 + 3

x = 10/5

x = 2

f(6) = 5 * 6 - 3 = 30 - 3 = 27

5x - 3 = -28

5x = -28 + 3

x = -25/5

x = -5

f(x) = -2x - 5

f(1) = -2 * 1 - 5 = -2 - 5 = -7

f(-1/2) = -2 * (-1/2) - 5 = 1 - 5 = (-4)

-2x - 5 = 0

2x = -5

x = -5/2

f(x) = 0,3x

0,3x = 1,5

x = 1,5/0,3

x = 5

0,3x = 0,06

x = 0,06/0,3

x = 0,2

f(-10) = 0,3 * 10 = 3

f(x) = -x + 6

-x + 6 = -2

x = 6 + 2

x = 8

f(0) = -0 + 6 = 6

f(-3) = -(-3) + 6 = 3 + 6 = 9

f(x) = -3

f(5) = -3

f(15) = -3

-3 = 8 impossible

f(x) = 2/3 x - 5

2/3 x - 5 = -3

2/3 x = 5 - 3

x = 2 * 3/2

x = 3

f(-5) = 2/3 * (-5) - 5 = -10/3 - (5 * 3)/3 = -10/3 - 15/3 = -25/3

2/3 x - 5 = -8/3

2/3 x = 5 - 8/3

2/3 x = 15/3 - 8/3

x = 7/3 * 3/2

x = 7/2