f(x)= -x²+ 6/x

calculer 3 fonction de f et -4,f(2) et f(1demi)

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Grade: Education Subject: mathematiques

f(x)= -x²+ 6/x

calculer 3 fonction de f et -4,f(2) et f(1demi)

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f(-4) = (-16 + 6)/-4 = 5/2
f(2) = (-4+6)/2 = 1
f(1/2) = (-1/4+6)/1/2 = (23/4)/(1/2) = 23/2