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Mathematics
Mathematics
Problem
Let
f
′
′
(
x
)
=
x
2
−
9
f''(x)=x^{2}-9
f
′′
(
x
)
=
x
2
−
9
for all real
x
x
x
. Determine all
x
x
x
-values at which the graph of
f
f
f
has a point of inflection.
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