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The values of m for which exactly one ro...

The values of m for which exactly one root of equation `x^(2)-2mx+m^(2)-1=0` lies in the interval `(-2,4)` lies in

A

`(-oo, oo)`

B

`(-3, -1)`

C

(3,5)

D

`(-3, -1) uu (3,5)`

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The correct Answer is:
D
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