If e1 and e2 are the eccentricities of a hyperbola and its conjugates then ,

If e_1 and e_2 are the eccentricities of a hyperbola and its conjugate then prove that (1)/(e_1^2)+(1)/(e_2^2)=1 .

If e and e' are the eccentricities of a hyperbola and its conjugate, then the locus of the points (e,e') is

If e_(1) and e_(2) are the eccentricities of a hyperbola and its conjugate then

If e_1 and e_2 are the eccentricities of a hyperbola and its conjugate, prove that: 1/e_1^2+1/e_2^2=1

If e and e' be the eccentricities of a hyperbola and its conjugate , then 1/e^2+1/(e'^2) equals :

If e_1 and e_2 be the eccentricities of a hyperbola and its conjugate, show that 1/(e_1^2)+1/(e_2^2)=1 .

If e_1 and e_2 be the eccentricities of hyperbola and its conjugate, then 1/e^2_1 + 1/e^2_2 = (A) sqrt(2)/8 (B) 1/4 (C) 1 (D) 4

If e and e' are the eccentricities of a hyperbola and its conjugate hyperbola respectively then prove that 1/e^2+1/(e')^2=1