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How to Use Log Tables in CBSE Board & Engineering Exams

Aug 17, 2017 17:17 IST
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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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