Authors:

Who has not been amazed to learn that the function y = ex, like a phoenix rising from its own ashes, is its own derivative?

François Le Lionnais (2004). “Great Currents of Mathematical Thought: Marthematics in the Arts and Sciences”, p.126, Courier Corporation
Who has not been amazed to learn that the function y = ex, like a phoenix rising from its own ashes, is its own derivative?