How do you find the domain of # f(x) = (x+9)/(x-3)#?
It will be all the real
The domain represents the set of all possible
In this case your function represent a Quotient (a division) with the
The problem with this configuration arises when the denominator becomes equal to zero because we cannot evaluate the quotient (in the Real domain), i.e., divide by zero.
So we say that the domain will be all real
And so when: