Question

Can someone help me and work it out plzzzz

Answer 1

9514 1404 393

Answer:

1. (c) x ≥ 0
2. (d) reals ≥ 2

Explanation:

The square root is only defined for arguments that are greater than or equal to zero.

√x . . . . defined for x ≥ 0

It will only have non-negative values.

√x . . . . has values ≥ 0

Using these facts, we can answer the questions.

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1. The domain is the set of values x may have. The square root function limits the domain to x ≥ 0.

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2. The range is the set of values y may have. The square root function is never negative, so the range must be 2 or greater.

y ≥ 2