bonsoir
f ( 1) = 5 et f ( 0 ) = 0
( 0 - 5 ) / ( 0 - 1 ) = - 5 / - 1 = 5
ax = 5 x et b = 0
f(x) = 5 x
g ( 3 ) = 2 et g ( - 3) = - 2
( - 2 - 2 ) / ( - 3 - 3 ) = - 4 /- 6 = 2/3
ax = 2 x /3
g ( 3) = 2
3 x 2/3 + b = 2
6/3 + b = 2
b = 2 - 2 = 0
g (x) = 2 x /3
d'où g ( - 3 ) = - 6 /3 = - 2
h ( 5 ) = 1 et h ( - 5 ) = - 1
( - 1 - 1 ) / ( - 5 - 5 ) = - 2 / - 10 = 1 /5
ax = x /5
h (x) = x /5
d'où h ( - 5 ) = - 5 /5 = - 1
k ( 3 ) = - 1 et k ( - 3 ) = 1
( 1 + 1 ) / ( - 3 - 3 ) = - 2/6 = - 1 /3
k x( ) = - x /3
