Q. 93.5( 68 Votes )
In each of the following, find the centre and radius of the circles.
The equation of the given of the circle 2x2 + 2y2 –x =0.
2x2 + 2y2 –x =0
(2x2 + x) +2y2 =0
+ y2 - = 0
+ (y - 0)2 = , which is of the form (x-h)2 + (y-k)2 =r2,
Where, h = , k = 0, and r=
Thus, the centre of the given circle is , while its radius is .
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