engineering mathematics MCQ #959

If f(x) = sin(2x), then f'(x) is

engineering mathematics MCQ #959

  1. Question 1

    Q1. If f(x) = sin(2x), then f'(x) is

    • A) 2cos(2x)
    • B) cos(2x)
    • C) 2sin(2x)
    • D) -2cos(2x)

    Answer: 2cos(2x)

    Explanation: Using the chain rule, if f(x) = sin(2x), then f'(x) = 2cos(2x) because the derivative of sin(u) is cos(u) * du/dx.