Logaritmi

Logaritmi

Assessment

Assessment

Created by

Rossana Cesaretti

Mathematics

10th - 12th Grade

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15 questions

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1.

Multiple Choice

30 sec

1 pt

L'uguaglianza  y=5xy=5^x  corrisponde in forma logaritmica a:

 y=logx5y=\log_x5  

 x=logy5x=\log_y5  

 y=log5xy=\log_5x  

 x=log5yx=\log_5y  

2.

Multiple Choice

30 sec

1 pt

L'uguaglianza  y=logx3y=\log_x3  corrisponde in forma esponenziale a:

 x=y3x=y^3  

 y=x3y=x^3  

 3=xy3=x^y  

 3=yx3=y^x  

3.

Multiple Choice

30 sec

1 pt

Nell'espressione  loga2\log_a2 il valore di a può essere:

Un qualunque numero

Un qualunque numero diverso da 0 e da 1

Un qualunque numero positivo e diverso da 1

Un qualunque numero non negativo e diverso da 1

4.

Multiple Choice

30 sec

1 pt

Le C.E. dell'equazione  log2(x+1)=3\log_2\left(x+1\right)=3  sono:

 x>1x>-1  

 x>0x>0  

 x>2x>2  

 x\forall x  

5.

Multiple Choice

30 sec

1 pt

Le C.E. della disequazione  log2(x2+1)>1\log_2\left(x^2+1\right)>1 sono: 

 x>1x>-1  

 x>0x>0  

 x<1    x>1x<-1\ \ \vee\ \ x>1  

 x\forall x  

6.

Multiple Choice

30 sec

1 pt

Cosa rappresenta il simbolo ln\ln ?

logaritmo con base qualunque

logaritmo con base  ee  

logaritmo con base un numero naturale

logaritmo con base 10

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