Question

How do you find the domain of the function `4/ (x^2-4)`?

Answer 1

the domain is all real x except when `x=+-2`

Explanation:

For the domain, look at the denominator. For fractions, the denominator cannot equal to zero as this is considered undefined

ie `x^2-4 !=0`

SO to find where it equal to zero, you say

`x^2-4=0`

`x=+-2`

Therefore, the domain is all real x except when `x=+-2`