Let the rational function be
.
The numerator of a rational function
in lowest terms determines the
-intercepts of its graph.
Observe the graph :
\The
-intercept of the graph is
(odd multiplicity; graph crosses the
-axis).
So one possibility for the numerator is
.
\
The denominator of a rational function
in lowest terms determines the vertical asymptotes of its graph.
Observe the graph :
\The vertical asymptotes of the graph are
and
.
Since
approaches
to the left of
and
approaches
to the right of
,
is a factor of odd multiplicity in
.
Since
approaches
to the left of
and
approaches
to the right of
,
is a factor of odd multiplicity in
.
A possibility for the denominator is
.
So far we have
.
Graph of
:
The graph is the reflection of the given graph over the
-axis. Therefore, in order to have the correct graph, change the numerator
to
.
One possibility for the rational function
.
One possibility;
.