The domain of a function is the set (in this case of real number) on which theOriginally Posted bybatman123

function is defined.

The function:

is defined whenever , which is equivalent to . Thus the

domain of is the set of all real numbers .

The range of a function is the set (in this case of real numbers)of values

which can be a value taken by the function for sone in its domain.

In this case any can be written as for

some , so the range of is the set of all .

RonL