In the context of calculus and differentiation, d and ∂ represent different types of derivatives. d (d/dx): The symbol d represents the ordinary derivative with respect to a single variable. When we write d/dx, it means the derivative of a function with respect to the variable x. ∂ (∂f/∂x): The symbol ∂ represents the partial derivative. It is used when a function depends on multiple variables. ∂f/∂x denotes the partial derivative of the function f with respect to the variable x, while holding all other variables constant. So, d and ∂ are not the same; they represent different types of derivatives: ordinary derivative and partial derivative, respectively.