On the Behaviour of Functions around Zero-Derivative Points (CROSBI ID 158429)
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Podaci o odgovornosti
Zlobec, Sanjo
engleski
On the Behaviour of Functions around Zero-Derivative Points
Zero-derivative points are of the fundamental importance in calculus and otimization. It has been recently shown that on intervals around zero-derivative points, and only around zero-derivative points, every smooth function with a Lipschitz derivative is an "envelope" of a parabolloid. In this paper we give two equivalent, but geometrically different, reformulations of this result. They are applied to the three classic theorems: Fermat's extreme value theorem, the mean value theorem, and the Lagrange multiplier theorem. These theorems are augmented over intervals and stated withouth derivatives.
zero-derivative point; Fermat's extreme value theorem; mean value theorem; Lagrange multiplier theorem
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Podaci o izdanju
1 (4)
2009.
329-340
objavljeno
2070-5565
2070-6839