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Logarithm

Concept and Laws of Logarithms

Let us suppose we are given 3 numbers: 2, 3 and 9.

Now, we know that 32 = 9

Also, $\sqrt{9}=3$

The above two expressions are formed by combining 2 and 3, and 2 and 9 respectively to get the third number.

Is there an expression wherein we can combine 3 and 9 to get 2?

3 and 9 can be combined to get 2 as:

Here, ‘log’ is the abbreviated form of a concept called ‘Logarithms’.

The expression can be read as ‘logarithm of 9 to the base 3 is equal to 2’.

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