Q.
The center(s) of the circle(s) passing through the points (0, 0) and ( 1, 0) and touching the circle x2+y2=9 is (are)
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a
(3/2,1/2)
b
(1/2,3/2)
c
1/2,21/2
d
1/2,−21/2
answer is C.
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Detailed Solution
From the diagram,122+λ2=32 or λ=±2 Hence, the centers of the circle are (1/2,±2).
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