JEE Main 2019 Mathematics question
If a directrix of a hyperbola centred at the origin and passing through the point is and its eccentricity is e, then:
Answer: (B)
Solution
⇒ , ; substituting (4, ) gives .
If a directrix of a hyperbola centred at the origin and passing through the point is and its eccentricity is e, then:
⇒ , ; substituting (4, ) gives .