engineering mathematics MCQ #845

If f(x) = sin(2x + 1), then f'(x) =

engineering mathematics MCQ #845

  1. Question 1

    Q1. If f(x) = sin(2x + 1), then f'(x) =

    • A) 2cos(2x + 1)
    • B) cos(2x + 1)
    • C) -2sin(2x + 1)
    • D) 2sin(2x + 1)

    Answer: 2cos(2x + 1)

    Explanation: Using the chain rule, f'(x) = cos(2x + 1) * d(2x + 1)/dx = 2cos(2x + 1).