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Log3(18)= 3

How?

 Dec 24, 2020
edited by Guest  Dec 24, 2020
 #1
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3(18)=54

 Dec 24, 2020
 #2
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+1

I dont understand your edited question.....

first you put 3(18)=?

Then you edited it to Log 3(18)= 3 How?

for my fist answer I used the tiger algebra calculator

for your edited question i have no answer......

Guest Dec 24, 2020
 #3
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log 2.62074 (18) = 3

 Dec 24, 2020
 #4
avatar+112029 
+1

I remember this

 

\(log_{10}100=2\qquad because \qquad 10^2=100\)

 

A log is a power

 

so

 

\(if \;\;x=log_3 18\;\;then \;\;18=3^x \)

 

I will use change of base log law to solve this

 

\(log_y x = \frac{log_a x}{log_a y}\)

 

 

\(log_318=\frac{log_{10}18}{log_{10}3}\approx 2.6309\)

 

So it will only 'equal' 3 if it is rounded to the nearest whole number.

 Dec 24, 2020
 #5
avatar+112029 
0

Please do not edit your question if it has been answered.

 

And even if it has not been answered yet, please explain what you are changing.

 Dec 24, 2020

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