engineering mathematics MCQ #664

Differentiate y = cos(x²)

engineering mathematics MCQ #664

  1. Question 1

    Q1. Differentiate y = cos(x²)

    • A) -2xsin(x²)
    • B) 2xsin(x²)
    • C) -sin(x²)
    • D) sin(x²)

    Answer: -2xsin(x²)

    Explanation: Using chain rule, if y = cos(u), then dy/dx = -sin(u)(du/dx), so dy/dx = -2xsin(x²)