engineering mathematics MCQ #483

The equation of the director circle of the ellipse x²/a² + y²/b² = 1 is

engineering mathematics MCQ #483

  1. Question 1

    Q1. The equation of the director circle of the ellipse x²/a² + y²/b² = 1 is

    • A) x² + y² = a² + b²
    • B) x² + y² = a² - b²
    • C) x² + y² = a²b²
    • D) x² + y² = a²/b²

    Answer: x² + y² = a² + b²

    Explanation: The director circle equation is x² + y² = a² + b², representing the locus of intersecting perpendicular tangents.