engineering mathematics MCQ #864

The derivative of sin(x)cos(x) is

engineering mathematics MCQ #864

  1. Question 1

    Q1. The derivative of sin(x)cos(x) is

    • A) cos²(x) - sin²(x)
    • B) cos²(x) + sin²(x)
    • C) sin(x)cos(x)
    • D) -sin(x)cos(x)

    Answer: cos²(x) - sin²(x)

    Explanation: Using product rule, if y = sin(x)cos(x), then y' = (sin(x))'cos(x) + sin(x)(cos(x))' = cos²(x) - sin²(x).