
Função do 2º grau ou função quadrática
Authored by GABRIEL PARISOTO
Mathematics
5th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a lei de formação de uma função do 2º grau?
f(x) = ax³ + bx² + c
f(x) = a/x + b
f(x) = ax + b
f(x) = ax² + bx + c
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o formato do gráfico de uma função do 2º grau?
Parábola
Reta
Círculo
Elipse
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se a > 0, a concavidade da parábola é para:
Cima
Esquerda
Baixo
Direita
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para encontrar as raízes de uma função quadrática, usamos:
Fórmula de Bhaskara
Fórmula de Gauss
Fórmula de Euler
Fórmula de Newton
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O vértice de uma parábola é o ponto de:
Intersecção com o eixo y
Máximo ou mínimo
Origem
Intersecção com o eixo x
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para calcular o valor numérico de uma função, substituímos o valor de:
x
y
a
b
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se Δ < 0, a função quadrática possui:
Duas raízes reais distintas
Infinitas raízes reais
Uma raiz real
Nenhuma raiz real
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