AMS bumper sticker: if you can solve this integral, you're following too close

miniapeur · x · 2026-10-29

A photo of an American Mathematical Society bumper sticker is making the rounds. It prints the integral ∫{-∞}^{∞} dx/(1+x²)=? with the caption "If you can solve this problem, you are driving too close" — the answer is π, and only drivers tailgating close enough to read the bumper would ever see the question. A math joke doubling as a tailgating warning.

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