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Mathematics
Mathematics
Problem
Let
f
(
x
)
=
x
3
+
x
f(x)=x^{3}+x
f
(
x
)
=
x
3
+
x
, which is invertible on
R
\mathbb R
R
. Calculate
(
f
−
1
)
′
(
2
)
(f^{-1})'(2)
(
f
−
1
)
′
(
2
)
.
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