f
(
____________________
)
=
c
____________________
(
x
)
=
x
f
(
x
)
=
____________________
f
(
x
)
=
____________________
(
x
)
f
(
x
)
=
____________________
(
x
)
____________________
(
x
)
=
tan
(
x
)
f
(
x
)
=
cot
(
____________________
)
f
(
____________________
)
=
0
____________________
(
x
)
=
1
f
(
x
)
=
c
