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Mathematics
Mathematics
Problem
Find the derivative of the vector function.
r
(
t
)
=
⟨
e
−
t
,
t
−
t
3
,
ln
t
⟩
\mathbf{r}(t) = \langle e^{-t}, t - t^3, \ln t \rangle
r
(
t
)
=
⟨
e
−
t
,
t
−
t
3
,
ln
t
⟩
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