Math, asked by dianacutinha18, 1 year ago

how to take log using log book without scientific calculators.? ​

Answers

Answered by kusumithavemali
1

Answer:

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Answered by sriniraja2007
1

Answer:

Step-by-step explanation:

Most of the logs you can find out by remembering log2,log3,log5 and log7.

Use the properties: log(ab)=log(a) +log(b), so log(6)=log(3)+log(2)

also obviously, log(

a

b

)=b×

×

log(a) , so log(8)=log(23

2

3

)=3×

×

log(2)

As for antilogs, the basic property is y=log(x) => x=

e

y

OR 10

10

y

if you are using 10()

l

o

g

10

(

x

)

. These methods will not obviously work every time, but they do most of the time.

As a culmination of these methods and approximation, let’s try to find log(893)

log(893)=log(127.57×

×

7)≈

log(7)+log(128)=log(7)+log(27

2

7

)=log(7)+7×

×

log(2)=0.845+7×

×

0.301=2.952 (actual value of log(893)=2.951)

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