When you take the derivative of a function, you expect to see some changes. However, the derivative of some functions is equal to themselves. For instance, the function is also its derivative, but it’s not a very interesting function. But, I know an interesting one, . Yes, the function is the derivative of itself! And this meme is a fun way to make sure that you never forget this fact! If you want to learn calculus, you should check Jiri Nadvornik’s beautiful tool Calculus Made Easy or get Silvanus P. Thompson’s book Calculus Made Easy!

# The Derivative of e^x

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