The centres of those circles which touch the circle,

MATHEMATICS · Single correct · CBSE · Mathematics · Conic Sections · Conic Sections

Problem

The centres of those circles which touch the circle, x2+y2−8x−8y−4=0x^2 + y^2 - 8x - 8y - 4 = 0 , externally and also touch the XX -axis, lie on (1) a hyperbola (2) a parabola (3) a circle (4) an ellipse which is not a circle

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