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Problem
Problem
Find all values of
a
a
a
for which the equation
4
x
2
−
2
x
+
a
=
0
4x^2 - 2x + a = 0
4
x
2
−
2
x
+
a
=
0
has two roots lie in the interval
(
−
1
,
1
)
(-1, 1)
(
−
1
,
1
)
.
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