bonjour
d 1 ( 0) = 3 et d 1 ( - 3 ) = - 3
( - 3 - 3 ) / ( - 3 - 0 )
= - 6 / - 3
= 2
ax = 2 x
d 1 ( 0) = 3
0 * 2 + b = 3
b = 3
f (x) = 2 x + 3
d 2 ( 0) = 0 et d 2 ( 1 ) = - 1
( - 1 - 0 ) / ( 1 - 0 ) = - 1 /1 = - 1
donc ax = - x
d 2 ( 1) = - 1
1 * - 1 + b = - 1
b = - 1 + 1 = 0
g (x) = - x
