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Let E be an ellipse whose axes are parallel to the co-ordinates axes, having its center at (3,−4), one focus at (4,−4) and one vertex at (5,−4). If mx−y=4,m>0 is a tangent to the ellipse E, then the value of 5m2 is equal to

Answer» Let E be an ellipse whose axes are parallel to the co-ordinates axes, having its center at (3,4), one focus at (4,4) and one vertex at (5,4). If mxy=4,m>0 is a tangent to the ellipse E, then the value of 5m2 is equal to


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