engineering mathematics MCQ #1850

The radius of the circle x² + y² + 2x + 2y + 1 = 0 is

engineering mathematics MCQ #1850

  1. Question 1

    Q1. The radius of the circle x² + y² + 2x + 2y + 1 = 0 is

    • A) 1
    • B) 2
    • C) √2
    • D) 1 / √2

    Answer: 1

    Explanation: The equation can be rewritten as (x + 1)² + (y + 1)² = 1, so the radius is √1 = 1