engineering mathematics MCQ #725

If y = (2x + 1)³, then dy/dx is

engineering mathematics MCQ #725

  1. Question 1

    Q1. If y = (2x + 1)³, then dy/dx is

    • A) 6(2x + 1)²
    • B) 3(2x + 1)²
    • C) 2(2x + 1)³
    • D) 4(2x + 1)²

    Answer: 6(2x + 1)²

    Explanation: Using chain rule, dy/dx = 3(2x + 1)² * d(2x + 1)/dx = 3(2x + 1)² * 2 = 6(2x + 1)²