t
=
3.00
−
4
4
}
parametric equations for
C
x
=
f
(
t
)
y
=
g
(
t
)
z
=
h
(
t
)
r
(
t
)
=
⟨
f
(
t
)
,
g
(
t
)
,
h
(
t
)
⟩
In this example,
f
(
t
)
=
4
cos
(
2
t
)
,
g
(
t
)
=
4
sin
(
2
t
)
,
h
(
t
)
=
t
.
In particular,
r
(
3.00
)
=
⟨
3.84
,
-1.12
,
3.00
⟩