The locus of the orthocenter of the triangle formed by the lines \( (1+p) x-p y+p(1+p)=0,(1+q) x... VIDEO
The locus of the orthocenter of the triangle formed by the lines \( (1+p) x-p y+p(1+p)=0,(1+q) x-q y+ \) \( q(1+q)=0 \) and \( y=0 \), where \( p \neq q \), is
(1) a hyperbola
(2) a parabola
(3) an ellipse
(4) a straight line
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