The function is .
Observe the graph:
\The area of shaded region is
.
The value of integral is .
(a). Find .
The region bounded between
to
.
The region is below the
-axis.
.
(b). Find .
Apply Additive Interval Property: .
Substitute and
.
.
(c). Find .
Apply Additive interval property: .
Substitute and
.
.
(d). Find .
Apply constant rule of integration:.
Substitute .
.
.
(e). Find .
Apply sum rule of integration:.
Substitute .
.
.
(f). Find the average value of over the interval .
Average value of the function on
is defined as
.
Substitute and
.
Substitute .
.
Average value is .
(a). .
(b). .
(c). .
(d). .
(e). .
(f). Average value is .