engineering mathematics MCQ #873

Differentiate y = sin(x) + cos(x)

engineering mathematics MCQ #873

  1. Question 1

    Q1. Differentiate y = sin(x) + cos(x)

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

    Answer: cos(x) - sin(x)

    Explanation: Derivative of sin(x) is cos(x) and derivative of cos(x) is -sin(x), so dy/dx = cos(x) - sin(x).