Mammoth Memory

Indices law - law 3

`a^(1/n)=\rootna`

A fraction is a root

To remember this try simple numbers you know first.

We know `4^(1/2)=sqrt4=2`

We can then apply this to all other examples:

 

Example 1               

`10\^(1/2)=\root2\10=3.162`

 

Example 2                             

`9\^(1/2)=\root2\9=3`   `(3xx3 =9)`

The second root of `9=3`        

(The second root is also known as the square root)

 

Example 3                       

`27\^(1/3)=\root3\27=3`       `(3xx3xx3=27)`

The third root of `27=3`         

(The third root is also known as the cube root)

 

 

 

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