The function is .
Domain :
\The function .
Denominator of the should not be and function under the squareroot cannot be negative.
\Thus, the domain of the function is
.
Intercepts :
\- intercept :
To find the - intercept, substitute
in the function.
There is no - intercept.
- intercept :
To find the - intercept, substitute
in the function.
is not in the domain of the function, hence it is not considered.
Thus, there is no - intercept.
Symmetry :
\If , then the function
is even and it is symmetric about
-axis.
If , then the function
is odd and it is symmetric about origin.
Here .
The function is odd.
Thus, the function is symmetric about origin.
Vertical Asymptote :
\Vertical asymptote exists where denominator is zero.
\Equate denominator 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.
\
Interval \ | \
Test Value | \Sign of ![]() | \
Conclusion | \
![]() | \
![]() | \
\
| \
decreasing | \
![]() | \
![]() | \
\
| \
\
decreasing \ | \
is decreasing on its domain because
.
Determination of extrema :
\ is an decreasing function, hence there is no chance of 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 | \
![]() | \
![]() | \
\
| \
Up | \
![]() | \
![]() | \
\
| \
\
Down \ | \
\
Thus, the graph is concave up on the interval .
The graph is concave down on the interval .
Graph of the function :
Graph of the function is
.