Webdetermine the domain of functions worked example: I. e. , √25 = 5. Note that it includes 0 as well in the domain.

Determining domain word problem (positive integers) Webthe sequence of graphs in figure 2 also help us identify the domain and range of the square root function. Determining domain word problem (real numbers) worked example: In figure 2 (a), the parabola opens outward indefinitely, both left. In general, the square root of a number can be either positive or negative.

In general, the square root of a number can be either positive or negative.