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Question

If the roots of the equation x22mx+m2+1=0 are imaginary, then m lies in

A
(1,)
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B
(,)
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C
(,1)
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D
All of these
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Solution

The correct option is B (,)
x22mx+m2+1=0
For roots to be imaginary
b24ac<0
4m24m24<0
4<0
As it is not dependent on m
So m lies (,)

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