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Mathematics
Mathematics
Problem
For the function
f
(
x
)
=
x
4
−
4
x
2
+
2
f(x)=x^{4}-4x^{2}+2
f
(
x
)
=
x
4
−
4
x
2
+
2
defined on
[
−
2
,
2
]
[-2,2]
[
−
2
,
2
]
, identify the entire set of real numbers
d
d
d
such that the equation
f
(
x
)
=
d
f(x)=d
f
(
x
)
=
d
has at least one solution in
[
−
2
,
2
]
[-2,2]
[
−
2
,
2
]
.
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