Alvord B. [1859] On the interpretation of imaginary roots in questions of maxima and minima (M. M. R., 2, 237-240; 1859-1860). M.M.R. [Mathematical Monthly (Rimkle). Cambridge Mass.] 2, 237-240.
Classification: C1f Étude de la variation des fonctions ; maxima et minima. Fiche 1611

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