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Properties of Logarithms

Properties of Logarithms

Assessment

Presentation

•

Mathematics

•

10th - 12th Grade

•

Practice Problem

•

Easy

Created by

Maria Cruz Farooqi

Used 66+ times

FREE Resource

8 Slides • 16 Questions

1

Properties of Logarithms

After studying this section you should be able to use the product rule, use the quotient rule, use the power rule and expand logarithmic expressions.

Slide image

2

How I feel about logarithms


3

Quick example of the Product Property of logarithms.


4

Poll

Expand:     log⁡6(u⋅v)\log_6\left(u\cdot v\right) 

 log⁡ (u)+ log⁡(v)\log\ \left(u\right)+\ \log\left(v\right)  

 log⁡6u +log⁡6v\log_6u\ +\log_6v  

 log⁡6u − log⁡6v\log_6u\ -\ \log_6v  

5

Multiple Select

 log⁡5(xy)\log_5\left(xy\right)  

Expand:

1

 log⁡5x − log⁡5y\log_5x\ -\ \log_5y  

2

 xlog⁡5yx\log_5y  

3

 log⁡5x + log⁡5y\log_5x\ +\ \log_5y  

4

 ylog⁡5xy\log_5x  

6

Multiple Select

 Expand:   log⁡2(a⋅b)Expand:\ \ \ \log_2\left(a\cdot b\right)  


1

 log⁡2b−log⁡2a\log_2b-\log_2a  

2

 log⁡2a2\frac{\log_2a}{2}  

3

 1+log⁡2a1+\log_2a  

4

 log⁡2a+log⁡2b\log_2a+\log_2b  

7

Oh yeah!

Level up

8

Multiple Choice

 Expand:    log⁡8(3⋅2⋅11)Expand:\ \ \ \ \log_8\left(3\cdot2\cdot11\right)  

1

 2log⁡832\log_83  

2

 6log⁡83+6log⁡826\log_83+6\log_82  

3

 log⁡83+log⁡82+log⁡811\log_83+\log_82+\log_811  

9

Multiple Select

 Expand: log⁡9(8⋅5⋅11)Expand:\ \log_9\left(8\cdot5\cdot11\right)  

1

 log⁡98+4log⁡95\log_98+4\log_95  

2

 log⁡98+log⁡95+log⁡911\log_98+\log_95+\log_911  

3

 2log⁡982\log_98  

4

 4log⁡98−log⁡954\log_98-\log_95  

10

Quick example of the Quotient Property of Logarithms

11

Poll

Expand:  log⁡6 xy\log_6\ \frac{x}{y}  

 5log⁡6x5\log_6x  

 log⁡6x3\frac{\log_6x}{3}  

 ylog⁡6xy\log_6x  

 log⁡6x−log⁡6y\log_6x-\log_6y  

12

Multiple Choice

 ln⁡ uv\ln\ \frac{u}{v}  

1

 ln⁡ u + ln⁡ v\ln\ u\ +\ \ln\ v  

2

 vln⁡uv\ln u  

3

 4ln⁡u4\ln u  

4

 ln⁡u−ln⁡v\ln u-\ln v  

13

Quick example of the Power Property of Logarithms

14

Multiple Choice

Expand:  log⁡7u3\log_7u^3  

1

 log⁡7u−log⁡7v\log_7u-\log_7v  

2

 ulog⁡7vu\log_7v  

3

 3log⁡7u3\log_7u  

15

Let's take this up a notch!

16

17

Multiple Choice

Question image

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A

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B

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C

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D

18

Multiple Choice

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A

2

B

3

C

4

D

19

Multiple Choice

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A

2

B

3

C

4

D

20

Multiple Choice

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A

2

B

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C

4

D

21

Multiple Choice

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A

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B

3

C

4

D

22

Multiple Choice

Condense:  12log⁡3x + 5log⁡3y\frac{1}{2}\log_3x\ +\ 5\log_3y  

1

 log⁡(xy5)\log\left(\sqrt{x}y^5\right)  

2

 log⁡3(xy5)\log_3\left(\sqrt{x}y^5\right)  

3

 log⁡3(5xy)\log_3\left(5\sqrt{x}y\right)  

4

 log⁡3(xy)52\log_3\left(xy\right)^{\frac{5}{2}}  

23

Multiple Choice

Expand:  log⁡4(3x2)\log_4\left(3x^2\right)  

1

 2log⁡43x2\log_43x  

2

 2log⁡43 + 2log⁡4x2\log_43\ +\ 2\log_4x  

3

 log⁡43 + 2log⁡4x\log_43\ +\ 2\log_4x  

4

 2log⁡43 + log⁡4x2\log_43\ +\ \log_4x  

24

Multiple Choice

Expand: log⁡6(54y)\log_6\left(\frac{5}{4y}\right)  

1

 log⁡65 + log⁡64 + log⁡6y\log_65\ +\ \log_64\ +\ \log_6y  

2

 log⁡65 − log⁡64 + log⁡6y\log_65\ -\ \log_64\ +\ \log_6y  

3

 log⁡65 − log⁡64 − log⁡6y\log_65\ -\ \log_64\ -\ \log_6y  

4

 log⁡65 − log⁡64y\log_65\ -\ \log_64y  

pattern-tertiary

Properties of Logarithms

After studying this section you should be able to use the product rule, use the quotient rule, use the power rule and expand logarithmic expressions.

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