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 | \ \
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Number chosen \ | \
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Value of | \
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\ | \
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Location of graph \ | \
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Above | \
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Below | \
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Above \ \ \ \ | \
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Below \ | \
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Point of graph \ | \
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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 :