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jason
Posts:
16
Registered:
4/30/07


locus
Posted:
Apr 9, 2008 9:23 PM


assuming the condition r^2(a+b)2r(gp+fq)+c(p^2+q^2)=0 is satisified prove that the locus of the perpendicular from origin to the line px+qy+r=0 is (a+b)(x^2+y^2)+2gx+2fy+c=0



