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Mathematics
Problem
Which of the following statements is the necessary condition for a point
x
=
c
x=c
x
=
c
to be a stationary point of a twice-differentiable function
f
(
x
)
f(x)
f
(
x
)
? a)
f
′
′
(
c
)
=
0
f''(c)=0
f
′′
(
c
)
=
0
b)
f
′
(
c
)
=
0
f'(c)=0
f
′
(
c
)
=
0
c)
f
(
c
)
=
0
f(c)=0
f
(
c
)
=
0
d)
f
′
(
c
)
≠
0
f'(c)\neq 0
f
′
(
c
)
=
0
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