Describe the long run behavior of
f
(
r
)
=
−
5
r
4
+
4
r
3
−
2
r
2
+
1
\displaystyle {f{{\left({r}\right)}}}=-{5}{r}^{{4}}+{4}{r}^{{3}}-{2}{r}^{{2}}+{1}
f
(
r
)
=
−
5
r
4
+
4
r
3
−
2
r
2
+
1
As
r
→
−
∞
\displaystyle {r}\to-\infty
r
→
−
∞
,
f
(
r
)
→
\displaystyle {f{{\left({r}\right)}}}\to
f
(
r
)
→
?
∞
-∞
0
As
r
→
∞
\displaystyle {r}\to\infty
r
→
∞
,
f
(
r
)
→
\displaystyle {f{{\left({r}\right)}}}\to
f
(
r
)
→
?
∞
-∞
0
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