"If `e_1a n d\ e_2` are respectively the eccentricities of the ellipse `(x^2)/(18)
Channel: Doubtnut
Date: 2020-07-05

"If `e_1a n d\ e_2`
 are respectively the eccentricities of the ellipse `(x^2)/(18)+(y^2)/4=1`
 and the hyperbola `(x^2)/9-(y^2)/4=1,`
 then the relation between `e_1a n d\ e_2`
 is
 a.`2e_1 ^2+e_2 ^2=3`
 b. `e_1 ^2+2e_2^ 2=3`
 
 c. `2e_1^ 2+e_2 ^2=3`
 d. `e_1 ^2+3e_2 ^2=2`"