Let , be a hyperbola such that the sum of lengths of the transverse and the conjugate axes is . If the eccentricity is , then value of is equal to ____.
Answer: 88
Solution
For the hyperbola, transverse axis length is and conjugate axis length is .
Given: , so .
Eccentricity: , so , giving .
Substituting into the sum:
So and .
Therefore: .
Given: , so .
Eccentricity: , so , giving .
Substituting into the sum:
So and .
Therefore: .
JEE Main · 2022 · 29 Jun 2022 · Shift 1 · Integer answer