9514 1404 393
Answer:
- (c) x ≥ 0
- (d) reals ≥ 2
Step-by-step 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.
__
1. The domain is the set of values x may have. The square root function limits the domain to x ≥ 0.
__
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
