bonjour
f (x) = - 3 x
f ( 2) = - 6
- 3 x = 18
x = - 6
g (x) = x /4
fg ( 8) = 8/4 = 2
x /4 = - 3
x = - 12
*************************************************************************************
f (x) = 7 x
f ( -10) = - 10 * 7= - 70
tu fais pareil ^pour - 5 , 0 et 2
7 x = - 21
x = - 3
f ( - 3) = - 21
tu fais pareil en posant l'équation pour 42
**********************************************************************************************
f ( 4) = 6 donc f (x) = 6 x /4 = 3 x /2
g ( 2) = 8 donc g (x) = 8/2 = 4 x
***********************************************************************************************
h ( 3) = 15 donc h ( x) = 15/3 = 5 x
h ( 8 ) = 8 * 5 = 40
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bonjour
f (x) = - 3 x
f ( 2) = - 6
- 3 x = 18
x = - 6
g (x) = x /4
fg ( 8) = 8/4 = 2
x /4 = - 3
x = - 12
*************************************************************************************
f (x) = 7 x
f ( -10) = - 10 * 7= - 70
tu fais pareil ^pour - 5 , 0 et 2
7 x = - 21
x = - 3
f ( - 3) = - 21
tu fais pareil en posant l'équation pour 42
**********************************************************************************************
f ( 4) = 6 donc f (x) = 6 x /4 = 3 x /2
g ( 2) = 8 donc g (x) = 8/2 = 4 x
***********************************************************************************************
h ( 3) = 15 donc h ( x) = 15/3 = 5 x
h ( 8 ) = 8 * 5 = 40