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[" 3.If the pair of lines "ax^(2)+2hxy+b...

[" 3.If the pair of lines "ax^(2)+2hxy+by^(2)+2gx+],[2fy+c=0" intersect on the "y" -axis then "(2002)],[[" 1) "2fgh=bg^(2)+ch^(2)," 2) "bg^(2)!=ch^(2)],[" 3) "abc=2fgh," 4) none of these "]]

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