engineering mathematics MCQ #966

If f(x) = x*sin(x), then f'(x) = ?

engineering mathematics MCQ #966

  1. Question 1

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

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

    Answer: x*cos(x) + sin(x)

    Explanation: Apply the product rule for differentiation: (uv)' = u'v + uv'.