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Sagot :

bonjour

a) f(0) = 6

b = 6

g(0) = -3

b = -3

b) f(4) - f(0) / 4 - 0 = -30 - 6 / 4 = -36/4 = -9

f(x) = -9x + 6

g(4) - g(0) / 4 - 0 = 13 + 3 / 4 = 16 / 4 = 4

g(x) = 4x - 3

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