Logaritamske jednačine 1

Logaritamske jednačine 1

2nd Grade

10 Qs

quiz-placeholder

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Logaritamske jednačine 1

Logaritamske jednačine 1

Assessment

Quiz

Mathematics

2nd Grade

Hard

Created by

Јованка Стојковић

Used 5+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Broj svih rešenja jednačine  logx1(x25x+7)=2\log_{x-1}\left(x^2-5x+7\right)=2  je:

0

1

2

3

ne znam

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Zbir svih rešenja jednačine  log2(x1)+log2(x+2)=2\log_2\left(x-1\right)+\log_2\left(x+2\right)=2  pripada intervalu:

 (,4)\left(-\infty,-4\right)  

 (4,0)\left(-4,0\right)  

 (0,3)\left(0,3\right)  

 (3,+)\left(3,+\infty\right)  

ne znam

3.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Broj rešenja j-ne log(72x)log(5+4x)+log7=0\log\left(7-2^x\right)-\log\left(5+4^x\right)+\log7=0 je: 

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Realno rešenje jednačine  x+log21(3x+1)=xlog217+log21756x+\log_{21}\left(3^x+1\right)=x\log_{21}7+\log_{21}756  pripada intervalu:

 (,21)\left(-\infty,-21\right)  

 (21,0)\left(-21,0\right)  

 (0,21)\left(0,21\right)  

 (21,+)\left(21,+\infty\right)  

ne znam

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Proizvod svih realnih rešenja jednačine  (log3 3x)log2xlog3 x33=12+log2x\left(\log_3\ \frac{3}{x}\right)\cdot\log_2x-\log_3\ \frac{x^3}{\sqrt{3}}=\frac{1}{2}+\log_2\sqrt{x} je: 

 38\frac{\sqrt{3}}{8}  

 11  

 364-\frac{3}{64}  

 12\frac{1}{2}  

ne znam

6.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Proizvod svih rešenja jednačine  xlogx=10\sqrt{x^{\log\sqrt{x}}}=10  je:

7.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Broj realnih rešenja jednačine  log5x=x5\left|\log_5x\right|=\left|x-5\right|  je (koristi grafičku metodu):

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