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Mathematics
Problem
Let
f
:
[
−
3
,
4
]
→
R
f:[-3,4]\to\mathbb R
f
:
[
−
3
,
4
]
→
R
be invertible with range
[
1
,
9
]
[1,9]
[
1
,
9
]
. What is the domain of
f
−
1
f^{-1}
f
−
1
? a)
[
−
3
,
4
]
[-3,4]
[
−
3
,
4
]
b)
R
\mathbb R
R
c)
[
1
,
9
]
[1,9]
[
1
,
9
]
d)
(
1
,
9
)
(1,9)
(
1
,
9
)
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