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Logaritmi

Authored by Ligia Ion

Mathematics

10th Grade

CCSS covered

Used 25+ times

Logaritmi
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9 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Rezultatul calculului

 log535log57+log525\log_535-\log_57+\log_525  este :

-1

0

1

3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Valoarea expresiei

 log8(log4(log216))\log_8\left(\log_4\left(\log_216\right)\right)  este :

8

0

-1

 ϕ\phi  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Expresia

 log(x+1)(x+5)\log_{\left(x+1\right)}\left(x+5\right)   este bine definită pentru  xx\in  

 (1, )\left(-1,\ \infty\right)  

 (5, )\left(-5,\ \infty\right)  

 (1, ){0}\left(-1,\ \infty\right)-\left\{0\right\}  

 x0x\ne0  

Tags

CCSS.HSF.BF.B.5

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Rezultatul calculului  (3log925)\left(3^{\log_925}\right)  este


9

5

3

0

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Expresia

 log9324log97\frac{\log_9\sqrt{324}}{\log_97}  este egală cu :

 log72+2log73\log_72+2\log_73  

 log187\log_{18}7  

 log911\log_911  

0

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 log2200\log_2200   în funcție de  a=log52a=\log_52  este

3a

 3a+2a\frac{3a+2}{a}  

3+2a

 3a+2\frac{3}{a}+2  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 log23log34log45...log20192020\log_23\cdot\log_34\cdot\log_45\cdot...\cdot\log_{2019}2020  este :

Rezultatl calculului

 log20202\log_{2020}2  

 log22020\log_22020  

 log23log20192020\frac{\log_23}{\log_{2019}2020}  

 log2019!2020!\log_{2019!}2020!  

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