Question 840989: What is the implied domain of the function f(x) (square root of 4x-9)/x^2-81? Express answer in interval notation. Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! Two issues to check : argument of the square root, division by zero.
The argument of the square root cannot be negative.
The denominator cannot equal zero.
So is not in the domain.
So the interval is,
(,)U(,)
