Find the supremum of
G={x|(x^2+1)^−1>1/2} Could someone help me out with this calculation? Thanks. Appreciate.
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2026-04-04 13:38:59.1775309939
Supremum calcualtion, how do I get the answer
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\begin{align*} (x^2+1)^{-1}&>1/2 \\ \iff x^2+1&<2 \\ \iff x^2 <1 \end{align*}