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Maniela
@Maniela
April 2019
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Bonjour tous le monde .
Determiné l'expression de la fonction affine : f (0) = 2 et f (1) = 4
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Thomas1106
Verified answer
F(x) = ax + b
f(0) = 2 ==> b = 2 ; puisque x=0 ==> ax = 0
f(1) = 4 ==> a+b = 4 ==> a+2 = 4 ==> a = 2
f(x) = 2x + 2
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xxx102
Bonsoir,
Une fonction affine est toujours de la forme f(x) = ax+b, où a et b sont deux réels.
Il faut les déterminer.
f(0) = 0xa+b = b = 2
f(1) = 1xa+b = 4.
On sait que f(0) = b, donc on a b = 2.
f(1) = 4, donc on a :
On a a = 2 et b = 2, d'où :
Si tu as des questions, n'hésite pas ! =)
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Verified answer
F(x) = ax + bf(0) = 2 ==> b = 2 ; puisque x=0 ==> ax = 0
f(1) = 4 ==> a+b = 4 ==> a+2 = 4 ==> a = 2
f(x) = 2x + 2
Une fonction affine est toujours de la forme f(x) = ax+b, où a et b sont deux réels.
Il faut les déterminer.
f(0) = 0xa+b = b = 2
f(1) = 1xa+b = 4.
On sait que f(0) = b, donc on a b = 2.
f(1) = 4, donc on a :
On a a = 2 et b = 2, d'où :
Si tu as des questions, n'hésite pas ! =)