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Свойства логарифмов

Authored by Елена Непогодина

Mathematics

11th Grade

Used 5+ times

Свойства логарифмов
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Выберите верное равенство

logxylogxz=logx zy\log_xy-\log_xz=\log_x\ \frac{z}{y}

logxylogxz=logx yz\log_xy-\log_xz=\log_x\ \frac{y}{z}

logxylogxz=logxylogxz\log_xy-\log_xz=\frac{\log_xy}{\log_xz}

logxylogxz=logxzlogxy\log_xy-\log_xz=\frac{\log_xz}{\log_xy}

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Выберите верное равенство

logma+logmb=logm(ab)\log_ma+\log_mb=\log_m\left(ab\right)

logma+logmb=logm(a+b)\log_ma+\log_mb=\log_m\left(a+b\right)

logmalogmb=logm(ab)\log_ma\log_mb=\log_m\left(ab\right)

logmalogmb=logm(a+b)\log_ma\log_mb=\log m​(a+b)

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Выберите верные равенства

logabn=nlogab\log_ab^n=n\cdot\log_ab

logabn=1nlogab\log_ab^n=\frac{1}{n}\cdot\log_ab

loganb=nlogab\log_{a^n}b=n\cdot\log_ab

loganb=1nlogab\log_{a^n}b=\frac{1}{n}\cdot\log_ab

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Найдите значение выражения

 log336log312\log_336-\log_312  

24

3

1

-1

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Вычислите

 log591log57+log5 2513\log_591-\log_57+\log_5\ \frac{25}{13}  

13

2

25

1

6.

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

 log491log413+log427\log_491-\log_413+\log_4\frac{\text{2}}{\text{7}}  

(a)  

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Вычислите

 13(1+9log37)log503\frac{1}{3}\left(1+9^{\log_37}\right)^{\log_{50}3}  

1

9

3

50

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