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set of values of m for which a chord of ...

set of values of m for which a chord of slope m of the circle `x^2 + y^2 = 4` touches parabola `y^2= 4x`, may lie in intervel

A

`(-oo,-sqrt((sqrt(2)-1))/(2))) cup (sqrt((sqrt(2)-1))/(2),oo)`

B

`(-oo,-1) cup (1,oo)`

C

`(-1,1)`

D

`R`

Text Solution

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The correct Answer is:
A
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