engineering mathematics MCQ #304

The foci of the ellipse 9x² + 4y² = 36 are

engineering mathematics MCQ #304

  1. Question 1

    Q1. The foci of the ellipse 9x² + 4y² = 36 are

    • A) (0, ±√5)
    • B) (±√5, 0)
    • C) (0, ±5)
    • D) (±5, 0)

    Answer: (0, ±√5)

    Explanation: First, convert the equation to standard form: x² / 4 + y² / 9 = 1. Then, c = √(a² - b²) = √(9 - 4) = √5.