f
(
x
)
=
____________________
f
(
x
)
=
x
____________________
(
x
)
=
____________________
f
(
x
)
=
sen
(
____________________
)
f
(
x
)
=
____________________
(
x
)
f
(
x
)
=
____________________
(
x
)
f
(
x
)
=
____________________
(
x
)
f
(
x
)
=
____________________
f
(
x
)
=
____________________
f
(
x
)
=
c
