Função quadrática-10ºC

Função quadrática-10ºC

10th Grade

20 Qs

quiz-placeholder

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Função quadrática-10ºC

Função quadrática-10ºC

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Lena D

Used 4+ times

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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Indica a afirmação FALSA.

O gráfico da função f(x)=(x3)2+5f\left(x\right)=-\left(x-3\right)^2+5 tem a concavidade voltada para baixo.

O vértice da parábola f(x)=(x+2)2+4f\left(x\right)=\left(x+2\right)^2+4 tem coordenadas (2, 4).

A função g(x)=2x2g\left(x\right)=2x^2 tem a concavidade mais “aberta” que a função h(x)=5x2h\left(x\right)=5x^2

A função g(x)=(x3)2g\left(x\right)=\left(x-3\right)^2 tem apenas um zero para x=3x=3 .

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Qual o vértice da função  f(x)=3(x4)210f\left(x\right)=3\left(x-4\right)^2-10 

 (3,10)\left(3,-10\right)  

 (4,10)\left(4,10\right)  

 (4,10)\left(4,-10\right)  

 (10,4)\left(-10,-4\right)  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qual o eixo de simetria da função  f(x)=3(x4)210f\left(x\right)=3\left(x-4\right)^2-10 

 x=3x=3  

 y=10y=-10  

 x=4x=-4  

 x=4  

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Na função  f(x)=3x25f\left(x\right)=3x^2-5 qual o contradomínio?

[ 33  ,+ \infty  [

] ,5-\infty,-5  ]

[5, ++\infty  [

[ 5,+-5,+\infty  [

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quantos zeros tem a função  f(x)=3(x2)2f\left(x\right)=3\left(x-2\right)^2 

dois zeros

um zero

nenhum zero

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A função  f(x)=3(x2)2f\left(x\right)=3\left(x-2\right)^2 é crescente no intervalo:

[ 2,+2,+\infty  [

[ 3,+3,+\infty  [

 IR0+IR_0^+  

] ,2-\infty,2  ]

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A função  f(x)=3(x2)2+1f\left(x\right)=-3\left(x-2\right)^2+1 é decrescente no intervalo:

] ,1-\infty,1 ]

[ 2,+2,+\infty  [

] ,2-\infty,2  ]

[ 1,+1,+\infty  [

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