engineering mathematics MCQ #361

Directrix of hyperbola x²/16 - y²/9 = 1 is:

engineering mathematics MCQ #361

  1. Question 1

    Q1. Directrix of hyperbola x²/16 - y²/9 = 1 is:

    • A) x = ±4
    • B) x = ±5
    • C) x = ±16/5
    • D) x = ±9/5

    Answer: x = ±16/5

    Explanation: Directrix: x = ±a/e. e = 5/4, so 16/4 ÷ 5/4 = 16/5.