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Mathematics
Mathematics
Problem
Let
h
′
(
x
)
h'(x)
h
′
(
x
)
be defined by
h
′
(
x
)
=
{
3
−
x
,
−
2
≤
x
≤
0
,
x
−
1
,
0
<
x
≤
3.
h'(x)=\begin{cases} 3-x, & -2\le x\le 0,\\ x-1, & 0<x\le 3. \end{cases}
h
′
(
x
)
=
{
3
−
x
,
x
−
1
,
−
2
≤
x
≤
0
,
0
<
x
≤
3.
On which interval is the graph of
h
h
h
concave down? a)
(
0
,
3
)
(0,3)
(
0
,
3
)
b)
(
0
,
1
)
(0,1)
(
0
,
1
)
c)
(
−
2
,
0
)
(-2,0)
(
−
2
,
0
)
d)
(
−
2
,
3
)
(-2,3)
(
−
2
,
3
)
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