The function is .
The domain of the function is .
Find the inflection points by equating the second derivative to zero.
\Apply first derivative on each side with respect to .
Apply second derivative on each side with respect to .
Determine the values of at which
or
does not exist.
But out of the domain
.
is end point of the interval.
So the function does not have any inflection points.
\Test for concavity of the interval is .
Intervals | \Test value | \ \
Sign of | \
Conclusion | \
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Concave upward | \
The function is concave upward in the intervals .
The function is concave upward in the interval .