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How to Use Log Tables?

Apr 17, 2019 17:27 IST

This article is all about learning how to use log tables in finding logarithm of a number. A series of video clips is used to explain the steps followed while using a log table to find the log of any number. The whole concept is made more clear by solving some numerical problems with logarithmic calculations.

How to Use Log Tables
How to Use Log Tables

Logarithms are a convenient way to express large numbers.  Before the invention of calculators, the only alternative to slide rules was to use tables of logarithms.

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The logarithm of a positive real number x with respect to base b, a positive real number not equal to 1, is the exponent by which b must be raised so as to yield x. In other words, the logarithm of x to base b is the solution y to the equation, by = x.

Some important formulae, also called logarithmic identities are mentioned in the table given below:

log identities

Many students have confusion about logarithms and find it difficult to find. Like anything else logarithm is not a very tough thing to understand. It’s actually a small skill in and of itself.

Jagranjosh presents here a series of videos explaining some common, clear & understandable

notes on the calculation of logarithms and use of log tables. 

Check the videos given below:

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