Question

What is the domain of the function y = StartRoot x EndRoot?

Negative infinity less-than x less-than infinity
0 less-than x less-than infinity
0 less-than-or-equal-to x less-than infinity
1 less-than-or-equal-to x less-than infinity

Answer 1

C

Explanation:

EDGE 2023

Answer 2

0 less-than-or-equal-to x less-than infinity

Explanation:

The square root function, y=√x, is defined for non-negative numbers. Its domain is ...

0 ≤ x < ∞

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Comment on the question

This shows up again and again in domain problems, so is worth remembering. The value under the radical cannot be negative (but it can be zero).