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Mathematics
Mathematics
Problem
The table below lists selected values of the first derivative of a differentiable function
f
f
f
.
x
0
2
4
6
8
x\quad 0\quad 2\quad 4\quad 6\quad 8
x
0
2
4
6
8
f
′
(
x
)
+
+
0
−
−
f'(x)\quad +\quad +\quad 0\quad -\quad -
f
′
(
x
)
+
+
0
−
−
On which open interval shown is
f
f
f
most clearly decreasing? a)
(
2
,
4
)
(2,4)
(
2
,
4
)
b)
(
4
,
6
)
(4,6)
(
4
,
6
)
c)
(
6
,
8
)
(6,8)
(
6
,
8
)
d)
(
0
,
2
)
(0,2)
(
0
,
2
)
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