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Question Number 129337 by TITA last updated on 15/Jan/21

$$\mathrm{a}\mathrm{set}\mathrm{S}\subset \mathbb{R}\mathrm{and}\mathrm{S}=\{\frac{\mathrm{n}}{\sqrt{{\mathrm{n}}^2+1}}:\mathrm{n}\in \mathbb{N},\mathrm{n}⩾1\}$$$$\mathrm{show}\mathrm{that}\mathrm{minS}=\frac{1}{\sqrt{2}}\mathrm{and}\mathrm{supS}=1$$

Commented by TITA last updated on 15/Jan/21

$$\mathrm{please}\mathrm{help}$$

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