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Mahou
@Mahou
July 2022
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Função do Segundo Grau
Considerando-se a função real f(x) = -2x^2 + 4x + 12, o valor máximo desta função é:
RESPOSTA 14
a) 1
b) 3
c) 4
d) 12
e) 14
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Eriivan
Quando o coeficiente a é negativo indica que a função possui um valor máximo, pra determinar esse valor use o Yv
Yv=-Δ/4a
Yv=-(b^2-4ac)/4a
Yv=-(16-4*(-2)*12)/4*(-2)
Yv=-112/-8
Yv=14
1 votes
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Yv=-Δ/4a
Yv=-(b^2-4ac)/4a
Yv=-(16-4*(-2)*12)/4*(-2)
Yv=-112/-8
Yv=14