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Esponenziali e qualche logaritmo

Authored by Chiara Bravi

Mathematics

11th Grade

Used 3+ times

Esponenziali e qualche logaritmo
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22 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 2x+1=02^x+1=0  ha soluzione

x=0

per ogni x

impossibile

x=-1

nessuna delle altre

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 3x133^x\le\frac{1}{3}  ha soluzione

 x1x\le-1  

 x1x\ge-1  

 x1x\le1  

 x1x\ge1  

nessuna delle altre

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 ln2ln3=ln2ln3\frac{\ln2}{\ln3}=\ln2-\ln3  

VERO

FALSO

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

L’espressione  log(ab)3\log\left(ab\right)^3    è uguale a

 log3a+log3b\log3a+\log3b  

 3[log(a+b)]3[\log(a+b)]  

 3(logalogb)3(\log a·\log b)  

 3(loga+logb)3(\log a+\log b)  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual è la soluzione dell’equazione esponenziale 4x+4=04^x+4=0  

 11  

 1-1  

 non ammette soluzioninon\ ammette\ soluzioni  

 00  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 7x+2=77^{x+2}=\sqrt{7}  Risolvi l'equazione esponenziale

 x=32x=\frac{3}{2}  

 x=32x=-\frac{3}{2}  

 non ha soluzioninon\ ha\ soluzioni  

 x=1x=-1  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 2x2+5x6=12^{x^2+5x-6}=1  

 x=6  x=1x=-6\ \wedge\ x=1  

 x=6  x=1x=6\ \wedge\ x=-1  

 non ha soluzioninon\ ha\ soluzioni  

 x=2  x=3x=-2\ \wedge\ x=-3  

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