engineering mathematics MCQ #998

If f(x) = sin(x) + cos(x), then f'(x) = ?

engineering mathematics MCQ #998

  1. Question 1

    Q1. If f(x) = sin(x) + cos(x), then f'(x) = ?

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

    Answer: cos(x) - sin(x)

    Explanation: Differentiate sin(x) and cos(x) to get f'(x) = cos(x) - sin(x).