Bonjour, voilà pour l'ex 3 :
a) f(0) = 1
f(2) = 2
f(-3) = -5
b) f(0) = f(3) = 1
f(-2) = f(4) = -1
c) 3 n’a pas d’antécédent
d) 0 a trois antécédents
Exercice 6
a)
f(0) = 2(0-3)²
f(0) = 18
f(3) = 2(3-3)²
f(3) = 0
f(-2) = 2(-2-3)²
f(-2) = 50
f(3/2) = 2(3/2 - 3)²
f(3/2) = 9/2
f(3/2) = 4,5
b)
f(10) = 2(10-3)²
f(10) = 98
f(-4) = 2(-4-3)²
f(-4) = 98On constate que f(10) = f(-4) = 98Elle a donc raison.
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Bonjour, voilà pour l'ex 3 :
a) f(0) = 1
f(2) = 2
f(-3) = -5
b) f(0) = f(3) = 1
f(-2) = f(4) = -1
c) 3 n’a pas d’antécédent
d) 0 a trois antécédents
Exercice 6
a)
f(0) = 2(0-3)²
f(0) = 18
f(3) = 2(3-3)²
f(3) = 0
f(-2) = 2(-2-3)²
f(-2) = 50
f(3/2) = 2(3/2 - 3)²
f(3/2) = 9/2
f(3/2) = 4,5
b)
f(10) = 2(10-3)²
f(10) = 98
f(-4) = 2(-4-3)²
f(-4) = 98
On constate que f(10) = f(-4) = 98
Elle a donc raison.