\
The function is
.
\
(
a
)
\
Find
.
\
Substitute
in
.
\
\
\
.
\
\
(
b
)
\
Find
.
\
Substitute
in
.
\
\
.
\
\
(
c
)
\
Find
.
\
Substitute
in
.
\
\
\
\
.
\
\
(
a
).
.
\
(
b
).
.
\
(
c
).
.