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dusya [7]
3 years ago
5

PLEASE EXPLAIN: h(x) = sqrt(4-x^2), find the domain and range.

Mathematics
1 answer:
Elis [28]3 years ago
8 0
H(x), or the range of this function, must be y >= 0, as you can never get a negative when square rooting any number.

For the domain, x cannot exceed -2 or 2, as this would mean we'd be finding the square root of a negative number, which can't happen without getting in to imaginary numbers. Thus, the domain must be -2 <= x <= 2.
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