kvadratna jednadžba-teorija

kvadratna jednadžba-teorija

10th Grade

18 Qs

quiz-placeholder

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kvadratna jednadžba-teorija

kvadratna jednadžba-teorija

Assessment

Quiz

Mathematics

10th Grade

Easy

Created by

Aleksandra Kos

Used 15+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Kvadratna jednadžba je svaka jednadžba oblika  ax2+bx+c=0ax^2+bx+c=0  pri čemu su a,b,c realni brojevi i  a0a\ne0  .

Netočno

Točno

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ako je koeficijent a=0a=0  tada kvadratna jednadžba  ax2+bx+c=0ax^2+bx+c=0  postaje:

kubna jednadžba

linearna jednadžba

eksponencijalna jednadžba

logaritamska jednadžba

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

U kvadratnoj jednadžbi ax2+bx+c=0ax^2+bx+c=0  koeficijent a zovemo:

vodeći koeficijent

linearni koeficijent

slobodni koeficijent

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

U kvadratnoj jednadžbi ax2+bx+c=0ax^2+bx+c=0  koeficijent c zovemo:

vodeći koeficijent

linearni koeficijent

slobodni koeficijent

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Odaberi točnu tvrdnju za kvadratnu jednadžbu 3x2+6x3=03x^2+6x-3=0 .

 a=6a=6  

 b=6b=6  

 a=3a=-3  

 b=3b=3  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Odaberi točnu tvrdnju za kvadratnu jednadžbu 12x2+45=0\frac{1}{2}x^2+\frac{4}{5}=0 .

 a=45a=\frac{4}{5}  

 b=12b=\frac{1}{2}  

 b=0b=0  

 c=0c=0  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Kojom formulom tražimo rješenja kvadratne jednadžbe?

x1,2=b±b24ac2ax_{1,2}=\frac{b\pm\sqrt{b^2-4ac}}{2a}

x1,2=bb24ac2ax_{1,2}=\frac{-b\sqrt{b^2-4ac}}{2a}

x1,2=b±b24ac2ax_{1,2}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

x1,2=b±b24ac4ax_{1,2}=\frac{-b\pm\sqrt{b^2-4ac}}{4a}

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