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Mathematics
Mathematics
Problem
Let
f
:
(
−
1
,
∞
)
→
R
f:(-1,\infty) \to \mathbb R
f
:
(
−
1
,
∞
)
→
R
be defined by
f
(
x
)
=
x
−
2
x
+
1
f(x)=\dfrac{x-2}{x+1}
f
(
x
)
=
x
+
1
x
−
2
. Find the domain of
f
−
1
f^{-1}
f
−
1
.
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