Funkcije, kvadratne nejednadžbe

Funkcije, kvadratne nejednadžbe

1st Grade

18 Qs

quiz-placeholder

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Funkcije, kvadratne nejednadžbe

Funkcije, kvadratne nejednadžbe

Assessment

Quiz

Mathematics

1st Grade

Medium

Created by

Đani Žufić

Used 2+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Translacijom grafa funkcije

 f(x)=12x2f\left(x\right)=-\frac{1}{2}x^2  za dvije jedinice u desno i jednu jedinicu prema gore dobije se parabola :

 y=12(x2)21y=-\frac{1}{2}\left(x-2\right)^2-1  

 y=12(x+2)2+1y=-\frac{1}{2}\left(x+2\right)^2+1  

 y=12(x2)2+1y=-\frac{1}{2}\left(x-2\right)^2+1  

 y=12(x+1)22y=-\frac{1}{2}\left(x+1\right)^2-2  

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Os simetrije parabole čije su nultočke

 x1=1x_1=-1  i  x2=4x_2=4  je pravac :

 2y3=02y-3=0  

 x3=0x-3=0  

 2x+3=02x+3=0  

 2x3=02x-3=0  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 f(x)=2(x+1)2+2f\left(x\right)=-2\left(x+1\right)^2+2  

Koji od navedenih grafova je graf funkcije

Media Image
Media Image
Media Image
Media Image

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Na slici je graf funkcije :

f(x)=2(x+1)22f\left(x\right)=-2\left(x+1\right)^2-2

f(x)=2(x+1)22f\left(x\right)=2\left(x+1\right)^2-2

f(x)=2(x1)2+2f\left(x\right)=2\left(x-1\right)^2+2

f(x)=2(x+1)2+2f\left(x\right)=2\left(x+1\right)^2+2

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Na slici je graf funkcije  f(x)=ax2+bx+cf\left(x\right)=ax^2+bx+c  . Što je od navedenog ispravno ?

 a<0;D<0a<0;D<0  

 a<0;D=0a<0;D=0  

 a<0;D>0a<0;D>0  

 a>0;D=0a>0;D=0  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Na slici je graf funkcije f(x)=ax2+bx+cf\left(x\right)=ax^2+bx+c  . Koja od tvrdnji je ispravna.


Funkcija poprima minimum -4 za  x = 1

Funkcija poprima maksimum -4 za x = 1

Funkcija poprima minimum 1 ha x = -4

Funkcija poprima minimum -4 za x = 2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Kolika je vrijednost parametra aa  ako najmanja vrijednost funkcije  f(x)=ax24x+2f\left(x\right)=ax^2-4x+2  iznosi  3-3   ?

Boduje se i postupak.

 45\frac{4}{5}  

 45-\frac{4}{5}  

 14-\frac{1}{4}  

 14\frac{1}{4}  

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