Love

Roses are red

Euhler's a hero

e^

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e^{x and 7 were walking down the street having a nice chat, when in the distance, they see a derivative walking towards them. 7 panics, turns and runs in the opposite direction. e}x is smug and walks right up. "Hi, I'm e^x" it boldly declares to the derivative. The derivative smiles back, "Hi, I'm dy/dt"