[" If e and "e_(1)" are the eccentricities of "xy=c],[x^(2)-y^(2)=a^(2)" then "e^(4)+e_(1)^(4)=]

If e and e_(1) are the eccentricities of xy=c^(2),x^(2)-y^(2)=a^(2) then e^(4)+e_(1)^(4)=

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) 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 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