What is the condition for ax2+by2+2gx+2fy+c=0ax^2 + by^2 + 2gx + 2fy + c = 0ax2+by2+2gx+2fy+c=0 to represent a circle?
a=ba=ba=b and h=0h=0h=0
a=ba=ba=b and g2+f2−ac>0g^2+f^2-ac > 0g2+f2−ac>0
a=ba=ba=b
a+b=0a+b=0a+b=0