What’s the interval domain of y=3
2 answers:
Answer:
Domain:
(
−
∞
,
0
)
∪
(
0
,
+
∞
)
Range:
(
−
∞
,
+
∞
)
Step-by-step explanation:
y
=
3
x
y
is defined
∀
x
∈
R
:
x
≠
0
Hence the domain of
y
is
(
−
∞
,
0
)
∪
(
0
,
+
∞
)
Now consider:
lim
x->0-
y
=
−
∞
and
lim
x->0+
y
=
+
∞
Hence the range of
y
is
(
−
∞
,
+
∞
)
This can be seen from the graph of
y
below.
graph{3/x [-10, 10, -5, 5]}
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