Réponse :
exercice 1:
1) B
2) A
3) C
4) A
5) B
6) C
7) C
8) A
9) B
10) C
exercice 2:
1) a) h(-3) = -5 x -3 = 15
h(1,5) = -5 x 1,5 = 7,5
b) h(-1) = -5 x -1 = 5
h(0,5) = -5 x 0,5 = -2,5
c) -5x=55 --> 55/-5 = -11
-5x= -10 --> -10/-5 = 2
2) a) g(7) = -3 x 7 + 1 = -20
b) g(-7) = -3 x -7 + 1 = 22
bonus: -3x+1 = -14 --> -3x= -15 --> x= -15/-3 = 5
-3x+1 = 0 --> -3x= -1 --> -1/-3 = 1/3
Explications étape par étape
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Réponse :
exercice 1:
1) B
2) A
3) C
4) A
5) B
6) C
7) C
8) A
9) B
10) C
exercice 2:
1) a) h(-3) = -5 x -3 = 15
h(1,5) = -5 x 1,5 = 7,5
b) h(-1) = -5 x -1 = 5
h(0,5) = -5 x 0,5 = -2,5
c) -5x=55 --> 55/-5 = -11
-5x= -10 --> -10/-5 = 2
2) a) g(7) = -3 x 7 + 1 = -20
b) g(-7) = -3 x -7 + 1 = 22
bonus: -3x+1 = -14 --> -3x= -15 --> x= -15/-3 = 5
-3x+1 = 0 --> -3x= -1 --> -1/-3 = 1/3
Explications étape par étape