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Mathematics
Mathematics
Problem
In one sentence, explain why a point
x
=
c
x=c
x
=
c
with
f
′
(
c
)
=
0
f'(c)=0
f
′
(
c
)
=
0
does not automatically guarantee that
f
f
f
has a local maximum or minimum at
c
c
c
.
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