Look at the following function:
What is the domain of the function?
Look at the following function:
What is the domain of the function?
To determine the domain of the function , we must ensure that the expression inside the square root, , is positive. Furthermore, because the square root is in the denominator, must be greater than zero:
Since the inequality ensures that the denominator is neither zero nor negative, it defines the domain of the function. Thus, the function is defined for all real numbers where .
Therefore, the domain of the function is .
x > 5