engineering mathematics MCQ #769

Find the derivative of y = cos(x²)

engineering mathematics MCQ #769

  1. Question 1

    Q1. Find the derivative of y = cos(x²)

    • A) -2x sin(x²)
    • B) -sin(x²)
    • C) 2x cos(x²)
    • D) x sin(x²)

    Answer: -2x sin(x²)

    Explanation: Using the chain rule, dy/dx = -sin(x²) * d(x²)/dx = -sin(x²) * 2x = -2x sin(x²)