bonsoir
droite coefficient directeur ordonnée
d 1 2 1
d 2 4 3
d 3 0.5 - 1
d 4 - 0.5 4
d 1
d ( 0 ) = 1 et d ( 1 ) = 3
( 3 - 1 ) : ( 1 - 0 ) = 2 /1 = 2
ax = 2 x
b = 1
fonction = 2 x + 1
d 2 ( 0 ) = 3 et d 2 ( - 1 ) = - 1
( - 1 - 3 ) : ( - 1 - 0 ) = - 4 / - 1 = 4
ax = 4
b = 3
d3 ( 0 ) = - 1 et d 3 ( 4 ) = 1
( 1 + 1 ) : ( 4 - 0 ) = 2 /4 = 1/2 = 0.5
ax = 0.5 x , b = - 1
d4 ( 0 ) = 4 et d 4 ( 6 ) = 1
( 1 - 4 ) : ( 6 - 0 ) = - 3 /6 = - 1 /2 = - 0.5
ax = - 0.5 x , b = 4
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bonsoir
droite coefficient directeur ordonnée
d 1 2 1
d 2 4 3
d 3 0.5 - 1
d 4 - 0.5 4
d 1
d ( 0 ) = 1 et d ( 1 ) = 3
( 3 - 1 ) : ( 1 - 0 ) = 2 /1 = 2
ax = 2 x
b = 1
fonction = 2 x + 1
d 2 ( 0 ) = 3 et d 2 ( - 1 ) = - 1
( - 1 - 3 ) : ( - 1 - 0 ) = - 4 / - 1 = 4
ax = 4
b = 3
d3 ( 0 ) = - 1 et d 3 ( 4 ) = 1
( 1 + 1 ) : ( 4 - 0 ) = 2 /4 = 1/2 = 0.5
ax = 0.5 x , b = - 1
d4 ( 0 ) = 4 et d 4 ( 6 ) = 1
( 1 - 4 ) : ( 6 - 0 ) = - 3 /6 = - 1 /2 = - 0.5
ax = - 0.5 x , b = 4