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{{ printedBook.courseTrack.name }} {{ printedBook.name }} One of the differences between a square root and a cube root function is the domain.

- For square root functions, the domain is only defined for numbers that result in
**nonnegative radicands**. - For cube root functions, the domain is defined for all real numbers.

From the diagram, we see that the graph has a domain of $x≥-3$ and range of and $y≥1.$

Since the graph's domain and range are restricted, we can conclude that this must be a square root function.