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x-R-x-0-and-x-R-x-1-




Question Number 196626 by sniper237 last updated on 28/Aug/23
Σ_(x∈R) x = 0    and   Π_(x∈R^∗ ) x = −1
$$\underset{{x}\in\mathbb{R}} {\sum}{x}\:=\:\mathrm{0}\:\:\:\:{and}\:\:\:\underset{{x}\in\mathbb{R}^{\ast} } {\prod}{x}\:=\:−\mathrm{1} \\ $$

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