KEAM 2010 Math Paper

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Question : 117 of 120

Marks: +1, -0

The equation of family of circles with centre at (h,k) touching the x -axis is given by

x2+y2−2hx+h2=0
x2+y2−2hx−2ky+h2=0
x2+y2−2hx−2ky−h2=0
x2+y2−2hx−2ky=0
x2+y2+2hx+2ky=0

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