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Mathematics
Mathematics
Problem
A particle’s position is given by
r
=
3
cos
θ
r = 3\cos\theta
r
=
3
cos
θ
with
θ
(
t
)
=
t
2
\theta(t) = t^{2}
θ
(
t
)
=
t
2
for
t
≥
0
t \ge 0
t
≥
0
. Find the magnitude of the velocity vector when
t
=
1
t = 1
t
=
1
.
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