The function is .
Find the intercepts :
\To find the - intercept, substitute
in the function.
.
The - intercept is
.
To find the -intercept, substitute
in the function.
The - intercept does not exits.
Find the relative extrema for the function :
Consider .
Differentiate on each side with respect to .
Use power rule : .
To find the critical number, make .
.
.
.
The relative extremum point occurs at .
If , then
.
Thus, the relative extremum point is .
Find the points of inflection :
\ Consider .
Derivative on each side with respect to .
.
Use power rule : .
.
To find inflection points, equate to zero.
.
Does not exist.
\There is no inflection points.
\Find the asymptotes :
\.
Vertical asymptote :
\To find vertical asymptote, equate denominator to zero.
\The vertical asymptote is .
Horizontal asymptote :
\The line is called a horizontal asymptote of the curve
if either
or
.
.
As, then
.
.
.
There is no horizontal asymptote.
\Slant asymptote :
\Since there is no horizontal asymptote, it does have a slant asymptote.
\As ,
.
Thus, the slant asymptote is .
Intervals of increase or decrease:
\Consider the test intervals as ,
and
.
\
Interval \ | \
Test Value | \Sign of ![]() | \
Conclusion | \
![]() | \
![]() | \
\
| \
Concave downward | \
![]() | \
![]() | \
\
| \
Concave downward | \
![]() | \
![]() | \
\
| \
Concave downward | \
\
Thus, the graph is concave downward on the intervals ,
, and
.
Graph :
\Draw a coordinate plane.
\Graph the function .
Note : The dashed lines indicates vertical asymptote.
\Intercepts :
\ - intercept :
.
- intercept : None.
Relative extremum points : .
Inflection points : None.
\Vertical asymptotes : .
Horizontal asymptote : None.
\Slant asymptote : .
The graph is concave downward on the intervals,
, and
.
Graph of the function :