The function is .
Domain :
\The function .
The function continuous for all the points except at
.
Thus, the domain of the function is
.
Intercepts :
\ - intercept:
To find the - intercept, substitute
in the function.
Thus, the function does not have - intercept.
- intercept :
To find the - intercept, substitute
in the function.
and
Thus, the function has - intercept at
and
.
Symmetry :
\If , then the function
is even function and it is symmetric about
-axis.
If , then the function
is odd function and it is symmetric about origin.
Here .
The function is even function.
Thus, the function is symmetric about
-axis.
Asymptotes :
\Vertical asymptote:
\To find vertical asymptote of the function , equate denominator of the function to zero.
Vertical asymptote is .
Horizontal asymptote:
\The line is called a horizontal asymptote of the curve
if either
or
Thus, the horizontal asymptote is .
Intervals of increase or decrease :
\.
Differentiate on each side with respect to .
.
is never zero on its domain.
Test intervals are and
\
Interval \ | \
Test Value | \Sign of ![]() | \
Conclusion | \
![]() | \
![]() | \
\
| \
Decreasing | \
![]() | \
![]() | \
\
| \
Increasing | \
Determination of extrema :
\The function has a local minimum as the is changing its sign from negative to positive at
.
As the function is not defined , the function
has no local minimum or maximum.
Determination of inflection point:
\Differentiate on each side with respect to .
.
is never zero.
Hence, there is no inflection points.
\But at the function is undefined.
Consider the test intervals as and
.
\
Interval \ | \
Test Value | \Sign of ![]() | \
Concavity | \
![]() | \
![]() | \
\
| \
Down | \
![]() | \
![]() | \
\
| \
\
Down \ | \
Thus, the graph is concave down on the interval .
The graph is concave down on the interval .
Graph of the function using above specifications :
Graph of the function is