Logaritmi

Logaritmi

10th - 12th Grade

14 Qs

quiz-placeholder

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Logaritmi

Logaritmi

Assessment

Quiz

Mathematics

10th - 12th Grade

Practice Problem

Medium

Created by

Massimo Vezzani

Used 26+ times

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Quale dei seguenti grafici è quello di y=2log2(4x)y=-2\log_2\left(4-x\right)  

Media Image
Media Image
Media Image
Media Image

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Se a, b e c sono numeri reali positivi e a1a\ne1  quale fra le seguenti uguaglianze è vera?

 logab +2logac =loga(b+2c)\log_ab\ +2\log_ac\ =\log_a\left(b+2c\right)  

 logab +2logac =loga(bc)\log_ab\ +2\log_ac\ =\log_a\left(b\cdot c\right)  

 logab logac =loga(bc)\log_ab\ -\log_ac\ =\log_a\left(\frac{b}{c}\right)  

 loga1 =a\log_a1\ =a  

 loga0=1\log_a0=1  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Quale delle seguenti affermazioni relative alla funzione logaritmica y=log12xy=\log_{\frac{1}{2}}x  è vera?

Il suo grafico non interseca l’asse x

Il suo grafico interseca l’asse y nel punto (0; 1)

È crescente

Il dominio è R

 Il codominio è R

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Semplifica:

log2800 - log2100

8

3

-3

1

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

 log90001=\log_{9000}1=  ___________

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 A cosa è uguale log62\log6\sqrt{2} ?

 log3+32log2\log3+\frac{3}{2}\log2  

 log3+log2log2\frac{\log3+\log2}{\log2}  

 log62log2\frac{\log6}{2\log2}  

 log612log2\log6\cdot\frac{1}{2}\log2  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

La disequazione logaX>logaY\log_aX>\log_aY porta alla disequazione  X<YX<Y  se la base ha valore: 

 00  

 25\frac{2}{5}  

 52\frac{5}{2}  

 2-2  

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