bonjour
f (2) = 5 et f ( 0 ) = 1
( 1 - 5) : ( 0 - 2 ) = - 4 /- 2 = 2 donc a = 2
2 *2 + b = 5 donc 4 + b = 5 donc b = 5 - 4 = 1
f (x) = 2 x + 1
a = 2 et b = 1
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bonjour
f (2) = 5 et f ( 0 ) = 1
( 1 - 5) : ( 0 - 2 ) = - 4 /- 2 = 2 donc a = 2
2 *2 + b = 5 donc 4 + b = 5 donc b = 5 - 4 = 1
f (x) = 2 x + 1
a = 2 et b = 1