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Mathematics
Mathematics
Problem
Let
g
:
[
0
,
∞
)
→
R
g:[0,\infty) \to \mathbb R
g
:
[
0
,
∞
)
→
R
be defined by
g
(
x
)
=
x
2
+
4
g(x)=x^{2}+4
g
(
x
)
=
x
2
+
4
. Decide whether
g
g
g
is onto.
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