engineering mathematics MCQ #808

If y = (2x + 1)⁴, then dy/dx = ?

engineering mathematics MCQ #808

  1. Question 1

    Q1. If y = (2x + 1)⁴, then dy/dx = ?

    • A) 8(2x + 1)³
    • B) 4(2x + 1)³
    • C) 2(2x + 1)³
    • D) (2x + 1)³

    Answer: 8(2x + 1)³

    Explanation: Using chain rule, dy/dx = d((2x + 1)⁴)/dx = 4(2x + 1)³ * d(2x + 1)/dx = 4(2x + 1)³ * 2 = 8(2x + 1)³.