Diskriminanta kvadratne jednadžbe

Diskriminanta kvadratne jednadžbe

9th - 11th Grade

17 Qs

quiz-placeholder

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Diskriminanta kvadratne jednadžbe

Diskriminanta kvadratne jednadžbe

Assessment

Quiz

Mathematics

9th - 11th Grade

Practice Problem

Hard

Created by

Mirjana Blažević-Mandić

Used 5+ times

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17 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Diskriminanta je

D=b4acD=b-4ac

D=b24acD=b^2-4ac

D=b2+4acD=b^2+4ac

D=b24acD=\sqrt{b^2-4ac}

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Navedi što određuje vrstu rješenja kvadratnoj jednadžbi

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Što je točno ?

ako je D>0D>0 kvadratna jednadžba ima konjugirano kompleksna rješenja

ako je D>0 kvadratna jednadžba ima realna različita rješenja

ako je D0D\ge0 kvadratna jednadžba ima realna rješenja

ako je D=0D=0 kvadratna jednadžba ima konjugirano kompleksna rješenja

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kvadratna jednadžba za koju je   D<0D<0  ima   

realna rješenja

realna različita rješenja

konjugirano kompleksna rješenja 

realna dvostruka rješenja

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Za kvadratnu jednadžbu 4x5x2+3=04x-5x^2+3=0  vrijedi 

nema realna rješenja

ima dva različita realna rješenja 

ima jedno realno rješenje

jedno rješenje je 0

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Odredi parametar m tako da jednadžba  x2x2(m+1)=0x^2-x-2\left(m+1\right)=0  ima realna različita rješenja


 m<98m<\frac{9}{8}  

 m<98m<-\frac{9}{8}  

 m>98m>-\frac{9}{8}  

 m>98m>\frac{9}{8}  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Odredi parametar m tako da jednadžba  (m+1)x25x2=0\left(m+1\right)x^2-5x-2=0  nema realna rješenja


 m<338m<\frac{33}{8}  

 m<,338>   bez    {1}m\in<-\infty,\frac{33}{8}>\ \ \ bez\ \ \ \ \left\{-1\right\}  

 m>1m>-1  

 m<,1>   bez    {338}m\in<-\infty,-1>\ \ \ bez\ \ \ \ \left\{\frac{33}{8}\right\}  

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