Learn Before
Example

Determining the Domain of the Radical Function g(x)=6x1g(x) = \sqrt{\frac{6}{x - 1}}

To find the domain of the radical function g(x)=6x1g(x) = \sqrt{\frac{6}{x - 1}}, first observe that the radical has an even index of 22, which strictly requires the radicand to be greater than or equal to 00. The radicand here is the rational expression 6x1\frac{6}{x - 1}. Since the numerator 66 is positive, the entire fraction will be mathematically greater than zero only if the denominator is also positive. Thus, set the denominator x1>0x - 1 > 0, which solves directly to x>1x > 1. Furthermore, the denominator cannot be zero (x10x - 1 \neq 0), a condition inherently satisfied by x>1x > 1. Therefore, the domain consists of all real numbers x>1x > 1, appropriately expressed in interval notation as (1,)(1, \infty).

0

1

Updated 2026-05-25

Contributors are:

Who are from:

Tags

OpenStax

Intermediate Algebra @ OpenStax

Ch.8 Roots and Radicals - Intermediate Algebra @ OpenStax

Algebra

Related
Learn After