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I'm currently spending an exchange year in France and I've stumbled upon this rather frequently. Here's an arbitrary example from my maths book: "Démontrer que le volume du petit cube en cm^3 est: bla bla bla." Why the infinitive form "Démontrer" instead of the imperative "Démontrez"?

marked as duplicate by Stéphane Gimenez Mar 2 '15 at 14:16

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