engineering mathematics MCQ #729

If f(x) = sin(x) / x, then f'(x) is

engineering mathematics MCQ #729

  1. Question 1

    Q1. If f(x) = sin(x) / x, then f'(x) is

    • A) (x cos(x) - sin(x)) / x²
    • B) (x cos(x) + sin(x)) / x²
    • C) cos(x) / x
    • D) sin(x) / x

    Answer: (x cos(x) - sin(x)) / x²

    Explanation: Using quotient rule, f'(x) = (x cos(x) - sin(x)) / x²