Find the domain and range of the real function: f(x)=√x² + 4.
Answers
Answered by
0
Step-by-step explanation:
The domain:
(
−
∞
,
−
2
]
⋃
[
2
,
∞
)
the range:
[
0
,
∞
)
Explanation:
f
(
x
)
=
√
x
2
−
4
x
2
−
4
≥
0
⇒
(
x
−
2
)
(
x
+
2
)
≥
0
x
∈
(
−
∞
,
−
2
]
⋃
[
2
,
∞
)
(
x
0
,
y
0
)
⇒
(
0
,
0
)
[
0
,
∞
)
Answered by
0
Answer:
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Step-by-step explanation:
domain is x€R
range is (2,+ infinity )
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