$\"\"$

The function is $\"\"$ .

Make a table in above function $\"\"$ .

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

Observe the table:

The $\"\"$ and $\"\"$ value are represents the domain and range of the function.

The domain of the function is $\"\"$ .

The range of the function is $\"\"$ .

Therefore, domain is all real numbers and range is all integers.

$\"\"$

Graph:

Graph the function $\"\"$ .

$\"\"$

Observe the graph,

The solid circle is represents the values that are included in the range of the function.

The hallow circle is represents the values that are not included in the range of the function.

$\"\"$

Graph of the function $\"\"$ is

$\"\"$

Domain is all real numbers.

Range is all integers.