Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Let
f
:
[
1
2
,
1
]
→
[
−
1
,
1
]
f: \left[\frac{1}{2}, 1\right] \rightarrow [-1, 1]
f
:
[
2
1
,
1
]
→
[
−
1
,
1
]
,
f
(
x
)
=
4
x
3
−
3
x
f(x) = 4x^3 - 3x
f
(
x
)
=
4
x
3
−
3
x
, find
f
−
1
(
x
)
f^{-1}(x)
f
−
1
(
x
)
?
Browse the problem library