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Mathematics
Problem
For the function
f
(
x
)
=
2
x
+
4
−
1
f(x)=\dfrac{2}{x+4}-1
f
(
x
)
=
x
+
4
2
−
1
, the equation of its horizontal asymptote is a)
y
=
0
y=0
y
=
0
b)
y
=
−
1
y=-1
y
=
−
1
c)
y
=
2
y=2
y
=
2
d)
y
=
−
1
2
y=-\dfrac{1}{2}
y
=
−
2
1
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