The curve is
on interval
.
Definition of the arc length:
\If the curve
,
, then the length of the curve is defined as,
.
Find
.
Consider
.
Apply derivative on each side with respect to
.


.
Arc length of the curve
:
Substitute
and
in
.

.
Consider
on
.
Graph the function
on
.
Observe the graph:
\
.
.