Answers and Explanations 217
lim
lim
lim
lim
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
→−∞
→ −∞
→−∞
+ =
+
( )
=
+
=
4
2
2
4
2
2
4
4
3
1
1 3
1
3
→ →−∞
→−∞
+
=
+
=
+
=
x
x
x
x
x
x
4
4
4
3
3
1 1
3
1 0
3
1
3
lim
Therefore, the only horizontal asymptote is y = 1
3
.
Answers
201–300