engineering mathematics MCQ #541

The equation of the tangent to the parabola y² = 4x at (1, 2) is?

engineering mathematics MCQ #541

  1. Question 1

    Q1. The equation of the tangent to the parabola y² = 4x at (1, 2) is?

    • A) x + y = 3
    • B) x - y = -1
    • C) y = x + 1
    • D) x - y + 1 = 0

    Answer: x - y = -1

    Explanation: The tangent at (x1, y1) to y² = 4ax is yy1 = 2a(x + x1). Here, it's y = x + 1, or x - y = -1.