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Mdiakite13
@Mdiakite13
April 2019
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Bonjour , j'ai besoin d'aide sur exercice de mathématique Soit une fonction f définie par :
f:↦5−3x2
En calculant
limh→0f(−2+h)−f(−2)h
déterminer f′(−2)
merci cordialement
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danielwenin
Verified answer
F(-2+h) = -3(-2+h)²+5 = -3h² + 12h - 12 + 5 = -3h² + 12h - 7
f(-2) = -7
f(-2+h) - f(-2) = -3h² + 12h et (f(-2+h) - f(-2) )/h = -3h + 12
f'(-2) = lim0 (-3h+12) = 12
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Verified answer
F(-2+h) = -3(-2+h)²+5 = -3h² + 12h - 12 + 5 = -3h² + 12h - 7f(-2) = -7
f(-2+h) - f(-2) = -3h² + 12h et (f(-2+h) - f(-2) )/h = -3h + 12
f'(-2) = lim0 (-3h+12) = 12