\
Graph of is given.
(a)
\The integral is .
.
.
\
(b)
\The integral is .
\
.
.
.
\
(c)
\The integral is .
.
.
\
(d)
\The integral is .
.
.
Substitute corresponding values in above expression.
\\
\
(a) .
(b) .
(c) .
(d) .