From origin, chords are drawn to the circle x2+y2−2y=0.The locus of the middle points of these chords is
T=S1i.e xx1+yy1−(y+y1)=x21+y21−2y1 Passes through (0,0) ∴ x2+y2−y=0
From the origin chords are drawn to the circle (x−1)2+y2=1. The equation of the locus of the middle points of these chords is