Logaritamska funkcija-osobine i grafik-test 1

Logaritamska funkcija-osobine i grafik-test 1

2nd Grade

10 Qs

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Logaritamska funkcija-osobine i grafik-test 1

Logaritamska funkcija-osobine i grafik-test 1

Assessment

Quiz

Mathematics

2nd Grade

Medium

Created by

Јованка Стојковић

Used 39+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Inverzna funkcija funkcije

 f(x)=3x2f\left(x\right)=3^x-2  je:

 f1(x)=log3(x2)f^{-1}\left(x\right)=\log_3\left(x-2\right)  

 f1(x)=2+log3xf^{-1}\left(x\right)=2+\log_3x  

 f1(x)=log3(x+2)f^{-1}\left(x\right)=\log_3\left(x+2\right)  

 f1(x)=log13xf^{-1}\left(x\right)=\log_{\frac{1}{3}}x  

 f1(x)=2log13(x+2)f^{-1}\left(x\right)=2-\log_{\frac{1}{3}}\left(x+2\right)  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Oblast definisanosti (domen) funkcije

 f(x)=3log13(2xx2)f\left(x\right)=3-\log_{\frac{1}{3}}\left(2-x-x^2\right)  je:

 (2,1)\left(-2,1\right)  

 (,1)(2,+)\left(-\infty,-1\right)\cup\left(2,+\infty\right)  

 RR  

 (,2)(1,)\left(-\infty,-2\right)\cup\left(1,\infty\right)  

 (1,2)\left(-1,2\right)  

3.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Od ponuđenih , označi funkcije koje su opadajuće:

f(x)=1+log2(x3)f\left(x\right)=1+\log_2\left(x-3\right)

f(x)=log5(x+2)f\left(x\right)=-\log_5\left(x+2\right)

f(x)=6+log0,4xf\left(x\right)=6+\log_{0,4}x

f(x)=2+log2xf\left(x\right)=2+\log_{\sqrt{2}}x

f(x)=3log0,2xf\left(x\right)=3-\log_{0,2}x

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

Pročitaj sa grafika nulu funkcije i upiši njene koordinate:

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Tačka sa koordinatama (1,0) je minimum funkcije

 f(x)=2log2xf\left(x\right)=2-\log_2x  :

tačno

netačno

ne znam

6.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

Funkcija

 f(x)=log5(x3)f\left(x\right)=\log_5\left(x-3\right)  je pozitivna u intervalu  (3,4)\left(3,4\right)  ?

tačno

netačno

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Funkcija   f(x)=log2(x+3)f\left(x\right)=-\log_2\left(x+3\right)  je negativna u intervalu:


 (,3)\left(-\infty,-3\right)  

 (3,2)\left(-3,-2\right)  

 (,2)\left(-\infty,-2\right)  

 (3,+)\left(-3,+\infty\right)  

 (2,+)\left(-2,+\infty\right)  

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