Question 41

Mathematics Hyperbola Medium

If \(e\) and \(e^{\prime}\) be the eccentricities of a hyperbola and its conjugate, then \(\frac{1}{e^{2}}+\frac{1}{e^{\prime 2}}=\)

(A) 1
(B) 2
(C) 0
(D) None of these
View Dynamic Solution & Explanation
Correct Solution: Option A

Step-by-step Solution:

\(e^{2}=\left(1+\frac{b^{2}}{a^{2}}\right)\) and \(e^{2}=\left(1+\frac{a^{2}}{b^{2}}\right)\) Hence \(\frac{1}{e^{2}}+\frac{1}{e^{\prime 2}}=1\) \[\] Choice (A)\[\]