bonjour
d 1 ( 0) = - 1 et d 1( - 4 ) = 3
( 3 + 1 ) : ( - 4 - 0 ) = 4 / - 4 = - 1
ax = - x
d 1 ( 0 ) = - 1
0 * - 1 + b = - 1
b = - 1
f (x) = - x - 1
d 2( 0 ) = 2 et d 2 ( 4 ) = 0
( 0 - 2 ) : ( 4 - 0 ) = - 2 /4 = - 1 /2
ax = - x /2
d (0) = 2 donc b = 2
g (x) = - x /2 + 2
d3 ( 0) = 3 et d 3 ( - 2 ) = - 5
( - 5 - 3 ) : ( - 2 - 0 ) = - 8 / - 2 = 4
ax = 4 x
d (0) = 3 donc b = 3
h (x) = 4 x + 3
d4 ( 0 ) = - 2 et d 4 ( - 4 ) = - 5
( - 5 + 2 ) : ( - 4 - 0 ) = - 3 / - 4 = 3 x /4
d ( 0) = - 2 donc b = - 2
i (x) = 3 x /4 - 2
