Find the centre and radius of the circle
x^2+y^2-ax-by=0

Dear Student,

x2+y2-ax-by=0Comparing the given equation with x2+y2+2gx+2fy+c=02g = -a and 2f = -b  and c = 0So,  g=-a2 and f=-b2But center=-g,-f=a2,b2Radius=g2+f2-c=a22+b22=a24+b24=a2+b22

Regards

  • -1
center coordinate = (a/2 , b/2)

radius = (a2+b2)1/2 . 2-1
 
  • 2
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