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JEEMAIN and NEET
>>
JEEMAIN PAST PAPERS
>>
2011
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Q)
Let
α
,
β
be real and
z
be a complex number. If
z
2
+
α
z
+
β
=
0
has two distinct roots on the line
R
e
z
=
1
, then it is necessary that
( A )
|
β
|
=
1
( B )
β
∈
(
1
,
∞
)
( C )
β
∈
(
−
1
,
0
)
( D )
β
∈
(
0
,
1
)
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