1.

If the centre of the circle 2x2+pxy+qy2+2gx+2fy+3 = 0 is (1,-3) then the radius of the circle is

Answer»

If the centre of the circle 2x2+pxy+qy2+2gx+2fy+3 = 0 is (1,-3) then the radius of the circle is




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