The function is
.
Substitute
in
.

Substitute
in
.

Hence,
it satisfies the third condition of the Roll
s theorem.
is continuous on the interval
.
The function is
.
Differentiate
on each side with respect to
.

is never
, thus there is no values of
where
.
Even though it does not contradict the Rolle
s theorem because
is undefined when
in which we should not apply Rolle
s theorem.
\
is undefined when
, we cannot apply Rolle
s theorem.