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Logaritem - pregled lastnosti

Total questions: 13

Worksheet time: 6mins

Name
Class
Date
1.

Zapiši v eksponentni obliki log636=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: log4(x+4)log4(x3)\log_4\left(x+4\right)-\log_4\left(x-3\right)

a)

log4(2x+1)\log_4\left(2x+1\right)

b)

log4(x2+x12)\log_4\left(x^2+x-12\right)

c)

log4(x+4x3)\log_4\left(\frac{x+4}{x-3}\right)

d)

log41\log_41

3.

Poenostavi: 2log3(11x)2\log_3\left(11x\right)

a)

log3(11x2)\log_3\left(11x^2\right)

b)

log3(121x)\log_3\left(121x\right)

c)

log3(22x)\log_3\left(22x\right)

d)

log3(121x2)\log_3\left(121x^2\right)

4.

Zapiši izraz log5+log6\log5+\log6 v obliki logc\log c

(a)  

5.

Izračunaj log164\log_{16}4

(a)  

6.

Naravni logaritem ima osnovo

a)

0

b)

-e

c)

10

d)

e

7.

Skrčli izraz log25+log2x\log_25+\log_2x

a)

log2(5x)\log_2\left(5x\right)

b)

log2(x5)\log_2\left(x^5\right)

c)

log2 x5\log_2\ \frac{x}{5}

d)

log2 x5\log_2\ \frac{x}{5}

8.

Izračunaj log2(18)\log_2\left(\frac{1}{8}\right)

(a)  

9.

Skrči 4log5x log5y4\log_5x\ -\log_5y

a)

log5 4xy\log_5\ \frac{4x}{y}

b)

log5 x4y\log_5\ \frac{x^4}{y}

c)

log5(4xy)\log_5\left(4x-y\right)

d)

log5(x4y)\log_5\left(x^4y\right)

10.

Skrči logmlogn+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 log413=log13log4\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)

log81=3\log81=3

b)

log481=3\log_481=3

c)

log381=4\log_381=4

d)

log34=81\log_34=81

13.

Izračunaj: lne2+ln1ln 1e\ln e^2+\ln1-\ln\ \frac{1}{e}

a)

3

b)

1

c)

-2

d)

0