engineering mathematics MCQ #335

The foci of the ellipse 25x² + 9y² = 225 are

engineering mathematics MCQ #335

  1. Question 1

    Q1. The foci of the ellipse 25x² + 9y² = 225 are

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

    Answer: (0, ±4)

    Explanation: For ellipse y² / a² + x² / b² = 1, foci = (0, ±√(a² - b²)).