Determining domain word problem (positive integers) In general, the square root of a number can be either positive or negative. Webdetermine the domain of functions worked example:

Note that it includes 0 as well in the domain. I. e. , the square root function domain is [0, ∞). In figure 2 (a), the parabola opens outward indefinitely, both left. 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:

Determining domain word problem (real numbers) worked example: