You can put this solution on YOUR website! a "function" must be which means "one and only one"; to each value of there is a value of .
The values that may assume are called the of the function, and those are the values for which the function is .
In the function , the may include ; consequently, could be .
But, there is case in which the domain be restricted, and that is the case when a denominator .
So, in this function a denominator may not be equal to because to divide by doesn’t make a sense.
Let set it equal to in order to find what may not be in a domain:
Solution:
In a domain could be all other real numbers except .
Domain: (, ] and [,)
