# 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.

**Top 7 Tricks to Master Mathematics**

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, *b ^{y}* =

*x*.

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

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:**

**Video 1: How to Use Log Tables (Basic Knowledge)****Video 2: How to Use Log Tables in Solving Questions (Part 1)****Video 3: How to Use Log Tables in Solving Questions (Part 2)****Video 4: How to Use Log Tables in Solving Questions (Part 3)**