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danieljustine2
@danieljustine2
January 2021
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Bonsoir à tous,j'aimerais beaucoup d'aide pour l'ex 5 et 8,au plus vite s'il vous plaît,merci d'avance
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totolekoala
Bonsoir,
exo 5
1) f(-3) = 2*(-3) + 7 = -6+7 = 1
2) f(-1) = 2*(-1) + 7 = -2+7 = 5
3) f(-4) = 2*(-4) + 7 = -8+7 = -1
4) f(0) = 2*(0) + 7 = 7
exo 8 :
1) f(x) = -2x
2) f(-9) = -2*(-9) = 18
3) f(-4) =
-2*(-4) = 8
bonne soirée,
T.
1 votes
Thanks 1
Christine17
F(x)=2x+7
f(-3)=1
f(x)=5 2x+7=5 2x=-2 x=-1
antécédent de -1
f(x)=-1 2x+7=-1 2x=-8 x=-4
f(0)=7
EX8
f(x)=-1/2x
f(-4)=2
f(-9)=9/2
f(x)=8
-1/2x=8
x=-16
0 votes
Thanks 0
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Lista de comentários
exo 5
1) f(-3) = 2*(-3) + 7 = -6+7 = 1
2) f(-1) = 2*(-1) + 7 = -2+7 = 5
3) f(-4) = 2*(-4) + 7 = -8+7 = -1
4) f(0) = 2*(0) + 7 = 7
exo 8 :
1) f(x) = -2x
2) f(-9) = -2*(-9) = 18
3) f(-4) = -2*(-4) = 8
bonne soirée,
T.
f(-3)=1
f(x)=5 2x+7=5 2x=-2 x=-1
antécédent de -1
f(x)=-1 2x+7=-1 2x=-8 x=-4
f(0)=7
EX8
f(x)=-1/2x
f(-4)=2
f(-9)=9/2
f(x)=8
-1/2x=8
x=-16