engineering mathematics MCQ #1842

The equation of the director circle of the ellipse x² / 4 + y² / 9 = 1 is

engineering mathematics MCQ #1842

  1. Question 1

    Q1. The equation of the director circle of the ellipse x² / 4 + y² / 9 = 1 is

    • A) x² + y² = 13
    • B) x² + y² = 5
    • C) x² + y² = 7
    • D) x² + y² = 11

    Answer: x² + y² = 13

    Explanation: Using director circle equation: x² + y² = a² + b², where a² = 9, b² = 4, so x² + y² = 13