engineering mathematics MCQ #880

Differentiate y = cos(2x)

engineering mathematics MCQ #880

  1. Question 1

    Q1. Differentiate y = cos(2x)

    • A) -2sin(2x)
    • B) 2sin(2x)
    • C) -sin(2x)
    • D) sin(2x)

    Answer: -2sin(2x)

    Explanation: Using chain rule, dy/dx = -sin(2x) * d(2x)/dx = -2sin(2x).