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 hyperbola xy=c^(2) ,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)=

If e_(1) and e_(2) are eccentricities of the hyperbolas xy=c^(2) and x^2-y^(2)=a^(2) then e_(1)^(2)+e_(2)^(2)=

If e_(1) and e_(2) are eccentricities of the hyperbolas xy=c^(2) and x^2-y^(2)=a^(2) then e_(1)^(2)+e_(2)^(2)=0

If e_(1)ande_(2) be the eccentricities of the hyperbola xy=c^(2)andx^(2)-y^(2)=c^(2) respectively then :

If e and e' be the eccentricities of a hyperbolas xy=c^2 and x^2-y^2=c^2 , then e^2+e'2 equals :

If e_(1) and e_(2) are the eccentricities of the hyperbolas xy=9 and x^(2)-y^(2)=25 then (e_(1),e_(2)) lie on a circle c_(1) with centre origin then (radius )^(2) of the director circle of c_(1) is

If e is the eccentricity of the hyperbola (x^(2))/(a^(2)) - (y^(2))/(b^(2)) = 1 , then e =