engineering mathematics MCQ #755

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

engineering mathematics MCQ #755

  1. Question 1

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

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

    Answer: 2 cos(2x)

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