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S-curve

    From Wiktionary, the free dictionary

    English

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    f(x)=11+ex=ex1+ex{\displaystyle f(x)={\frac {1}{1+e^{-x}}}={\frac {e^{x}}{1+e^{x}}}}

    Etymology

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    From the shape, which resembles a vertically compressed letter S.

    Noun

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    S-curve (pluralS-curves)

    1. Logistic growth, or a graph detailing it.
      Synonym:logistic curve
    2. Reverse curve
      • 2016 March 15, Justin Breen, “Remember The Old Lake Shore Drive 'S' Curve? It's Been Gone For 30 Years”, inDNAinfo[1], archived fromthe original on29 July 2023:
        The currentS-curve includes much gentler bends starting around Randolph Street and ending just before Monroe Street.
      • 2024 April 17, Curtis Segarra, “NMDOT hosting public meeting on ‘S-curve’ portion of Albuquerque I-25”, inKRQE[2]:
        The so-called “S-curve” onI-25 is a notoriously dangerous stretch of freeway just south of theBig-I.

    See also

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