" (2) "xy+x^(2)y^(2)=C

If e and e_(1) , are the eccentricities of the hyperbolas xy=c^(2) and x^(2)-y^(2)=c^(2) , then e^(2)+e_(1)^(2) is equal to

If e and e_(1) , are the eccentricities of the hyperbolas xy=c^(2) and x^(2)-y^(2)=c^(2) , then e^(2)+e_(1)^(2) is equal to

If e and e_(1) , are the eccentricities of the hyperbolas xy=c^(2) and x^(2)-y^(2)=c^(2) , then e^(2)+e_(1)^(2) is equal to

If e_(1) and e_(2) are the eccentricites of hyperbola xy=c^(2) and x^(2)-y^(2)=c^(2) , then e_(1)^(2)+e_(2)^(2)=

The locus of the foot of the perpendicular from the centre of the hyperbola xy=c^(2) on a variable tangent is (A) (x^(2)-y^(2))=4c^(2)xy(B)(x^(2)+y^(2))^(2)=2c^(2)xy(C)(x^(2)+y^(2))=4c^(2)xy(D)(x^(2)+y^(2))^(2)=4c^(2)xy

If e and e_1 are the eccentricities of the hyperbola xy=c^(2) ,x^(2) -y^(2) =c^(2) "then" e^(2) +e_1^(2) is equal to

Equation of straight liens joining the origin and points of intersection of the line 3x+4y-5=0 and the curve 2x^(2)+3y^(2)=5 is (a)x^(2)-y^(2)=24xy(b)x^(2)+y^(2)=24xy(c)x^(2)+y^(2)=xy(d) None of these

x-x^(2)y+xy^(2)-y

Solution of the differential equation y(xy+2x^(2)y^(2))dx+x(xy-x^(2)y^(2))dy=0 is, (c is constant of integration)