F.r.v.r (1)

F.r.v.r (1)

10th Grade

10 Qs

quiz-placeholder

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F.r.v.r (1)

F.r.v.r (1)

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Easy

Created by

Ana Guedes

Used 28+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Seja  ff  a função representada na figura.

O domínio da função   ff  é:

]-2, 1[

[-2, 1[

[-2, 1]

]-2, 1]

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Seja  ff   a função cujo gráfico está representado na figura.


O contradomínio da função   ff  é:

|R

[-2, 2]

[-2, 2[

]-2, 2[

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Seja  ff  a função cujo gráfico está representado na figura.



Qual das afirmações é falsa.

 f(1)=0f\left(-1\right)=0  

 f(2)=2f(0)f\left(-2\right)=-2f\left(0\right)  

 f(2)>f(1)f\left(-2\right)>f\left(1\right)  

 f(0)=1f\left(0\right)=1  

4.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

Neste momento sinto-me:

Confiante.

Pouco confiante.

Muito confiante.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Das representações gráficas apresentadas, quais as que representam funções?

(A) e (B)

(A) e (C)

(B) e (D)

(B) e (C)

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Seja  gg  a função real de variável real definida por   g(x)=52+5xg\left(x\right)=\frac{5}{2}+\sqrt{5-x}  . Assinala a opção correta.

 Dg=D_g=  |R 

 Dg=D_g=  ] 5, +5,\ +\infty  [

 Dg=D_g=  ] , 5-\infty,\ 5  ]

 Dg={5}D_g=\left\{5\right\}  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Considera a função real de variável real definida por   f(x)= 3x225f\left(x\right)=\ \frac{\sqrt{3}}{x^2-25}  . Seleciona a opção falsa.

 Df=D_f=  | RR  \  {5, 5}\left\{-5,\ 5\right\}  

 Df=D_f=  { xx\in  | R : x5  x5R\ :\ x\ne-5\ \wedge\ x\ne5  }

 Df=D_f=  {  xx\in  | R: x 5  x5R:\ x\ \ne-5\ \vee\ x\ne5  }

 Df=D_f=  { xx\in  | R: x2 250R:\ x^2\ -25\ne0  }

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