- #1
themadhatter1
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Hi, I came across this interesting integral
[tex]\int_{-\infty}^{\infty}\frac{d}{dx}(\arctan x) dx=\pi[/tex]
I can derive the solution analytically, but I cannot think of a geometric proof. Does anyone know geometrically why this integral is equal to pi?
[tex]\int_{-\infty}^{\infty}\frac{d}{dx}(\arctan x) dx=\pi[/tex]
I can derive the solution analytically, but I cannot think of a geometric proof. Does anyone know geometrically why this integral is equal to pi?
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