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Revisão para CN

Authored by Cristina Horita

Mathematics

University

Used 194+ times

Revisão para CN
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13 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Resolva a equação  x+5=1412xx+5=14-\frac{1}{2}x  

18

6

38

3

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Resolva a equação  2xx+1=2x1x\frac{2x}{x+1}=\frac{2x-1}{x}  

-1

2

1

0

3.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Indique quais são as igualdades falsas.

 (p+q)2=p2+q2\left(p+q\right)^2=p^2+q^2  

 ab=ab\sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}  

 1xy=1x1y\frac{1}{x-y}=\frac{1}{x}-\frac{1}{y}  

 1xaxbx=1ab\frac{\frac{1}{x}}{\frac{a}{x}-\frac{b}{x}}=\frac{1}{a-b}  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Sendo o gráfico da função  ff  dada na figura. Qual o valor de  f(1)f\left(-1\right)  ?

0

1

-1

-2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Considerando o mesmo gráfico. Estime o valor de  f\left(2\right) 

4

2,8

1,9

0

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Para quais valores de x  vale  f(x)=2f\left(x\right)=2  ?

2 e 2,8

-3 e 1

-1 e 1

-1 e 2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Estime o(s) valor(es) de x  tais que  f(x)=0f\left(x\right)=0  

-1

-2

-2,5 e 0,3

-3 e 3

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