AP Calculus AB Quiz
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LIMITS AND CONTINUITY
Question 1
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For which of the following functions are
y
=
2
y=2
y
=
2
and
y
=
−
2
y=-2
y
=
−
2
the horizontal asymptotes?
A
f
(
x
)
=
2
x
x
2
+
1
f(x) = \frac{2x}{\sqrt{x^2+1}}
f
(
x
)
=
x
2
+
1
2
x
B
f
(
x
)
=
2
x
2
x
2
+
1
f(x) = \frac{2x^2}{x^2+1}
f
(
x
)
=
x
2
+
1
2
x
2
C
f
(
x
)
=
4
x
x
+
1
f(x) = \frac{4x}{x+1}
f
(
x
)
=
x
+
1
4
x
D
f
(
x
)
=
2
e
−
x
+
2
f(x) = 2e^{-x} + 2
f
(
x
)
=
2
e
−
x
+
2
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