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Logaritem - pregled lastnosti

Total questions: 13

Worksheet time: 6mins

Name
Class
Date
1.

Zapiši v eksponentni obliki log⁡636=2\log_636=2

a)

26=362^6=36

b)

62=366^2=36

c)

362=636^2=6

d)

366=236^6=2

2.

Poenostavi: log⁡4(x+4)−log⁡4(x−3)\log_4\left(x+4\right)-\log_4\left(x-3\right)

a)

log⁡4(2x+1)\log_4\left(2x+1\right)

b)

log⁡4(x2+x−12)\log_4\left(x^2+x-12\right)

c)

log⁡4(x+4x−3)\log_4\left(\frac{x+4}{x-3}\right)

d)

log⁡41\log_41

3.

Poenostavi: 2log⁡3(11x)2\log_3\left(11x\right)

a)

log⁡3(11x2)\log_3\left(11x^2\right)

b)

log⁡3(121x)\log_3\left(121x\right)

c)

log⁡3(22x)\log_3\left(22x\right)

d)

log⁡3(121x2)\log_3\left(121x^2\right)

4.

Zapiši izraz log⁡5+log⁡6\log5+\log6 v obliki log⁡c\log c

(a)  

5.

Izračunaj log⁡164\log_{16}4

(a)  

6.

Naravni logaritem ima osnovo

a)

0

b)

-e

c)

10

d)

e

7.

Skrčli izraz log⁡25+log⁡2x\log_25+\log_2x

a)

log⁡2(5x)\log_2\left(5x\right)

b)

log⁡2(x5)\log_2\left(x^5\right)

c)

log⁡2 x5\log_2\ \frac{x}{5}

d)

log⁡2 x5\log_2\ \frac{x}{5}

8.

Izračunaj log⁡2(18)\log_2\left(\frac{1}{8}\right)

(a)  

9.

Skrči 4log⁡5x −log⁡5y4\log_5x\ -\log_5y

a)

log⁡5 4xy\log_5\ \frac{4x}{y}

b)

log⁡5 x4y\log_5\ \frac{x^4}{y}

c)

log⁡5(4x−y)\log_5\left(4x-y\right)

d)

log⁡5(x4y)\log_5\left(x^4y\right)

10.

Skrči log⁡m−log⁡n+2\log m-\log n+2

a)

2log⁡ mn2\log\ \frac{m}{n}

b)

log⁡ (mn)2\log\ \left(\frac{m}{n}\right)^2

c)

log⁡ 100mn\log\ \frac{100m}{n}

d)

log⁡(2mn)\log\left(2mn\right)

11.

Katero lastnost logaritma opisuje izraz log⁡413=log⁡13log⁡4\log_413=\frac{\log13}{\log4}

a)

Prehod k novi osnovi

b)

Pravilo deljenja

c)

Pravilo produkta

d)

Pravilo potence

12.

Zapiši z logaritmom: 34=813^4=81

a)

log⁡81=3\log81=3

b)

log⁡481=3\log_481=3

c)

log⁡381=4\log_381=4

d)

log⁡34=81\log_34=81

13.

Izračunaj: ln⁡e2+ln⁡1−ln⁡ 1e\ln e^2+\ln1-\ln\ \frac{1}{e}

a)

3

b)

1

c)

-2

d)

0