engineering mathematics MCQ #759

If y = e^(-x), then dy/dx = ?

engineering mathematics MCQ #759

  1. Question 1

    Q1. If y = e^(-x), then dy/dx = ?

    • A) -e^(-x)
    • B) e^(-x)
    • C) -e^x
    • D) e^x

    Answer: -e^(-x)

    Explanation: Using chain rule, dy/dx = d(e^(-x))/dx = e^(-x) * d(-x)/dx = e^(-x) * (-1) = -e^(-x).