nathalienouts
F(-1) = (-1)²-2x(-1)-1 = 1+2-1 = 2 point A (-1;2) f0) = 0-2x0-1 = -1 point B (0;-1) f(1) = 1²-2x1-1 = 1-2-1 = -2 point C (1;-2) f(2) = 2²-2x2-1 = 4-4-1 = -1 point D (2;-1) f(3) = 3²-2x3-1 = 9-6-1 = 2 point E (3;2)
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margauxpareyt
Dans ta formule, remplace x par -1, et calcul le tout :)
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f0) = 0-2x0-1 = -1 point B (0;-1)
f(1) = 1²-2x1-1 = 1-2-1 = -2 point C (1;-2)
f(2) = 2²-2x2-1 = 4-4-1 = -1 point D (2;-1)
f(3) = 3²-2x3-1 = 9-6-1 = 2 point E (3;2)