The rational function is
.
In rational functions the denominator can not be zero.
\Find exceptional values equate denominator to zero.
\

The domain of function
is
.
.
.
\
is in lowest terms.
The rational function is
.
Change
to
.
.
Find the intercepts.
\Find
intercept equate numerator to
.
The function has no
intercept.
Find the
intercept by substituting
in the rational function.

The
-intercept is
.
Find the vertical asymptote by equating denominator to zero.
\

So the function has vertical asymptote at
and
.
Graph:
\Graph the function with its horizontal and vertical asymptotes.
\
Find horizontal asymptote, first find the degree of the numerator and
\degree of the denominator.
\Degree of the numerator
and degree of the denominator is
.
Oblique asymptote: \ \
\If the degree of the numerator is grater than the degree of denominator
\then oblique asymptote exist.
\Thus, the function has no oblique asymptote.
\The horizontal asymptote is
.
There are no zeros in the numerator.
\The zeros of denominator are
and
, use these values to divide
the
axis into three intervals are
.
| Interval | \ \
| \
\
| \
\
| \
\
| \
| \
Number chosen \ | \
\
| \
\
| \
\
| \
\
| \
| \
Value of | \
\
| \
\
\
| \
\
| \
\
| \
| \
Location of graph \ | \
\
Above | \
\
Below | \
\
Above \ \ \ \ | \
\
Below \ | \
| \
Point of graph \ | \
\
| \
\
\
| \
\
| \
\
| \
End behavior of the graph:
\
and
.
and
.
and
.
The Rational function
does not have horizontal asymptote.
Graph :
\The graph of
:
\
The graph of the rational function
:
.gif\")