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[" 2.The equation of the ellipse,whose f...

[" 2.The equation of the ellipse,whose focus is the point "(-1,1)," correspondit "],[" directrix is the straight line "x-y+3=0" and whose eccentricity is "1/2" is : "],[[" (a) "7x^(2)+2xy+7y^(2)+10x-10y+7=0" (b) "x^(2)+2xy+10x-10y+3=0],[" (c) "3x^(2)+xy+10x-10y+3=0," (d) none of these "]]

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