Thread: Finding Domain without a calculator

I know the answer is (0,2) U (2, infinity)

f(x) = squareroot(4x-3)
(x^2)-4

Do you set the denominator to zero? I am not 100% sure.

Originally Posted by danielh9103

I know the answer is (0,2) U (2, infinity)

f(x) = squareroot(4x-3)
(x^2)-4

Do you set the denominator to zero? I am not 100% sure.

Are you sure it's not ?

You are on the right track; set the denominator to zero because when it is zero, f is undefined (so exclude any such x from the domain). Also, solve because that will make non-real.

You are on the right track and