So, the domain is [-2, 2]. 4. Answer : f(x) = √(4 - x) + 1/ √(x 2 - 1) The given function has two parts : Part 1 is √(4 - x) Part 2 is 1/ √(x 2 - 1) Part 1 : 4 - x ≥ 0. Subtract 4 from both sides.-x ≥ -4.

This precalculus video tutorial explains how to find the domain of a square root function. It also contains examples and practice problems showing you how t