engineering mathematics MCQ #850

If y = sin(2x) + cos(2x), then dy/dx = ?

engineering mathematics MCQ #850

  1. Question 1

    Q1. If y = sin(2x) + cos(2x), then dy/dx = ?

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

    Answer: 2cos(2x) - 2sin(2x)

    Explanation: Using the chain rule, the derivative of sin(2x) is 2cos(2x) and of cos(2x) is -2sin(2x).