SOLUTION: I am having problems with the following: Find the domain of the function f(x) = 5x-1 / x^2 - 16 So I am doing x^2 + 5x + 16 = 0 but I feel like that is just wrong. Any hel

Algebra ->  Functions -> SOLUTION: I am having problems with the following: Find the domain of the function f(x) = 5x-1 / x^2 - 16 So I am doing x^2 + 5x + 16 = 0 but I feel like that is just wrong. Any hel      Log On


   

Question 192777: I am having problems with the following:
Find the domain of the function f(x) = 5x-1 / x^2 - 16
So I am doing x^2 + 5x + 16 = 0
but I feel like that is just wrong.
Any help would be appreciated.
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-16=0
:
x=4 or -4 would make the denominator equal to zero which would make the function undefined
:
therefore the domain is all Real numbers except 4 and -4