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Mathematics
Problem
Let
f
(
x
)
=
x
3
−
9
x
f(x)=x^{3}-9x
f
(
x
)
=
x
3
−
9
x
on the closed interval
[
0
,
4
]
[0,4]
[
0
,
4
]
. What is the absolute minimum value of
f
f
f
on this interval? a)
−
3
3
-3\sqrt{3}
−
3
3
b)
−
6
3
-6\sqrt{3}
−
6
3
c)
28
28
28
d)
0
0
0
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