Eksponencijalne i logaritamske funkcije i jednadžbe

Eksponencijalne i logaritamske funkcije i jednadžbe

10th Grade - University

12 Qs

quiz-placeholder

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Eksponencijalne i logaritamske funkcije i jednadžbe

Eksponencijalne i logaritamske funkcije i jednadžbe

Assessment

Quiz

Mathematics

10th Grade - University

Hard

Created by

Draga Dolenec-Gashi

Used 6+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Kojoj funkciji pripadaju zadane točke grafa: (4,2), (2,1), (1, 0), (12, 1), (14, 2)\left(4,-2\right),\ \left(2,-1\right),\ \left(1,\ 0\right),\ \left(\frac{1}{2},\ 1\right),\ \left(\frac{1}{4},\ 2\right) ?

 f(x)=(12)xf\left(x\right)=\left(\frac{1}{2}\right)^x  

 f(x)=2xf\left(x\right)=2^x  

 f(x)=log12xf\left(x\right)=\log_{\frac{1}{2}}x  

 f(x)=log2 xf\left(x\right)=\log_{2\ }x  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Kojoj funkciji pripadaju zadane točke grafa: (0, 1), (1, 2), (2, 4), (2, 14), (1, 12)\left(0,\ 1\right),\ \left(1,\ 2\right),\ \left(2,\ 4\right),\ \left(-2,\ \frac{1}{4}\right),\ \left(-1,\ \frac{1}{2}\right) ?

 f(x)=(12)xf\left(x\right)=\left(\frac{1}{2}\right)^x  

 f(x)=2xf\left(x\right)=2^x  

 f(x)=log12xf\left(x\right)=\log_{\frac{1}{2}}x  

 f(x)=log2 xf\left(x\right)=\log_{2\ }x  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Vrijednost funkcije  log2256\log_2256 je

 22  

 44  

 66  

 88  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Vrijednost funkcije  log0.10.00001\log_{0.1}0.00001 je

 22  

 44  

 55  

 1010  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ako je  f(x)=log2 (x2+4x+19)f\left(x\right)=\log_2\ \left(x^2+4x+19\right) onda je  f(5)=f\left(5\right)=  

 22  

 44  

 66  

 88  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ako je  f(x)=log5 (x24x+13)f\left(x\right)=\log_5\ \left(x^2-4x+13\right) onda je  f(2)=f\left(-2\right)=  

 22  

 44  

 66  

 88  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Rješenje jednadžbe   5x253+x=12552x5^x\cdot25^{3+x}=125\cdot5^{2x} je

 33  

 3-3  

 55  

 5-5  

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