"If `e_1` is the eccentricity of the conic `9x^2+4y^2=36\ a n d\ e_2` is the eccentricity
Channel: Doubtnut
Date: 2020-07-05

"If `e_1`
 is the eccentricity of the conic `9x^2+4y^2=36\ a n d\ e_2`
 is the eccentricity of the conic `9x^2-4y^2=36`
 then
 a. `e_1 ^2-e_2^ 2=2`
 b. `e_2 ^2-e_1 ^2=2`
 
 c. 2lt `e_2^2-e_1^2lt3`
 d.`e_1^2-e_2^2lt3`"