Domain and Range of a function

In this post, we find the domain and range of a function with the help of different examples.

Example: 1 Find the domain and range  of x².

Solution.

 Domain: Set of all real numbers

Range:    Set of all non –negative real numbers.

Example: 2 Find the domain and range  of    .

Solution.

 Domain: Set of all real numbers except -2 and 2

Range:    Set of all real numbers.

Example: 3 Find the domain and range  of    .

Solution.

 Domain: : 

Range:       

 

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