engineering mathematics MCQ #397

The foci of the ellipse x²/25 + y²/9 = 1 are

engineering mathematics MCQ #397

  1. Question 1

    Q1. The foci of the ellipse x²/25 + y²/9 = 1 are

    • A) (±4, 0)
    • B) (±3, 0)
    • C) (0, ±4)
    • D) (0, ±3)

    Answer: (±4, 0)

    Explanation: Here a² = 25, b² = 9, c = √(a² - b²) = √(25 - 9) = 4, so foci are (±4, 0).