engineering mathematics MCQ #770

If y = (x + 1) / (x - 1), find dy/dx at x = 2

engineering mathematics MCQ #770

  1. Question 1

    Q1. If y = (x + 1) / (x - 1), find dy/dx at x = 2

    • A) -2
    • B) -4
    • C) -1 / 2
    • D) -1 / 4

    Answer: -4

    Explanation: Using the quotient rule, dy/dx = ((x - 1) - (x + 1)) / (x - 1)² = -2 / (x - 1)², at x = 2, dy/dx = -2