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Logaritmi -operacije i osobine test 2

Authored by Јованка Стојковић

Mathematics

2nd Grade

Used 1+ times

Logaritmi -operacije i osobine test 2
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10 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Ako je

 x=3log9(3+22)x=3^{\log_9\left(3+2\sqrt{2}\right)}  tada je vrednost izraza   x3x+1\frac{x-3}{x+1}  jednaka:

 3223-2\sqrt{2}  

 222\sqrt{2}  

 11  

 2232\sqrt{2}-3  

 3+223+2\sqrt{2}  

2.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Vrednost izraza:

 log3log0,2 15log13log2413\log_{\sqrt{3}}\log_{0,2}\ \frac{1}{\sqrt{5}}-\log_{\frac{1}{3}}\log_{\sqrt{2}}4^{\frac{1}{3}}  je (upiši samo broj):

3.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Vrednost izraza

 log2log39log0,5log15 55\log_{\sqrt{2}}\log_{\sqrt{3}}9-\log_{0,5}\log_{\frac{1}{5}}\ \frac{\sqrt{5}}{5}  je (upiši samo broj): 

4.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Vrednost izraza

 log0,25(184139log321 )\log_{0,25}\left(18\cdot4^{\frac{1}{3}}\cdot9^{-\log_{\sqrt{3}}2-1\ }\right)  je:

 23\frac{2}{3}  

 76\frac{7}{6}  

 16\frac{1}{6}  

 73\frac{7}{3}  

 32\frac{3}{2}  

5.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Vrednost izraza

 log215+2log0,5252log410log26\frac{\log_{\sqrt{2}}15+2\log_{0,5}25}{2\log_410-\log_26}  je (upiši samo broj):

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Vrednost izraza

 log025log525+log8log13 13\log_{025}\log_{\sqrt{5}}25+\log_8\log_{\frac{1}{3}}\ \frac{1}{\sqrt{3}}  je:

 11  

 43\frac{4}{3}  

 43-\frac{4}{3}  

 34\frac{3}{4}  

 34-\frac{3}{4}  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Vrednost izraza

 log5(151250,253log351)\log_{\sqrt{5}}\left(15\cdot125^{0,25}\cdot3^{-\log_{\sqrt{3}}5-1}\right)  je:

 12-\frac{1}{2}  

 5\sqrt{5}  

 12\frac{1}{2}  

 11  

 15\frac{1}{5}  

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