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Mathematics
Mathematics
Problem
8. If the position function of a particle is
x
(
t
)
=
2
t
3
−
6
t
2
+
12
t
−
18
,
t
>
0
x(t)=2 t^{3}-6 t^{2}+12 t-18, t>0
x
(
t
)
=
2
t
3
−
6
t
2
+
12
t
−
18
,
t
>
0
, find when the particle is changing direction.
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