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Mathematics
Mathematics
Problem
Find the derivative of the vector function.
r
(
t
)
=
t
a
×
(
b
+
t
c
)
\mathbf{r}(t) = t \mathbf{a} \times (\mathbf{b} + t \mathbf{c})
r
(
t
)
=
t
a
×
(
b
+
t
c
)
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