Ecuații exponențiale și ecuații logaritmice

Ecuații exponențiale și ecuații logaritmice

10th Grade

20 Qs

quiz-placeholder

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Ecuații exponențiale și ecuații logaritmice

Ecuații exponențiale și ecuații logaritmice

Assessment

Quiz

Mathematics

10th Grade

Hard

Created by

Olga Bîrsanu

Used 33+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 log28=3\log_28=3  Scrie sub formă de putere

 23=82^3=8  

 32=83^2=8  

 28=32^8=3  

 83=28^3=2  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 log7 149=2\log_7\ \frac{1}{49}=-2  

Scrie sub formă de putere

 7149=27^{\frac{1}{49}}=-2  

 (149)2=7\left(\frac{1}{49}\right)^{-2}=7  

 72=1497^{-2}=\frac{1}{49}  

 (2)7=149\left(-2\right)^7=\frac{1}{49}  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 log93=12\log_93=\frac{1}{2}   Scrie sub formă de putere

 912=39^{\frac{1}{2}}=3  

 312=93^{\frac{1}{2}}=9  

 93=129^3=\frac{1}{2}  

 (12)9=3\left(\frac{1}{2}\right)^9=3  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 a=7ba=7^b  Scrie expresia sub formă de log

 log7a=b\log_7a=b  

 logb7=a\log_b7=a  

 logab=7\log_ab=7  

 log7b=a\log_7b=a  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x=11yx=11^y  Scrie expresia sub formă de log

 log11 y=x\log_{11}\ y=x  

 logy11=x\log_y11=x  

 log11x=y\log_{11}x=y  

 logxy=11\log_xy=11  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 50=15^0=1  Scrie expresia sub formă de log:

 log51=0\log_51=0  

 log05=1\log_05=1  

 log50=1\log_50=1  

 log10=5\log_10=5  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 a=lg ba=\lg\ b  Care este baza pentru acest logaritm

1

0

10

e

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