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Mathematics
Problem
The first derivative of a twice-differentiable function
f
f
f
satisfies the values shown. x 1 5
f
′
(
x
)
f'(x)
f
′
(
x
)
3
−
1
-1
−
1
Which interval must contain at least one value
c
c
c
for which
f
′
′
(
c
)
=
−
1
f''(c) = -1
f
′′
(
c
)
=
−
1
? a)
(
3
,
4
)
(3,4)
(
3
,
4
)
b)
(
1
,
5
)
(1,5)
(
1
,
5
)
c)
(
2
,
3
)
(2,3)
(
2
,
3
)
d)
(
1
,
2
)
(1,2)
(
1
,
2
)
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