The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper is devoted to a story of the well-known Rolle's theorem: If the function is continuous on [a, b], differentiable in (a, b) and f (a) = f (b), then there exists in (a, b ) at least one point c such that f'(c) = 0. A history of the associated statements about the roots of a continuous function: If the function f is continuous on [a, b] and has different signs at the ends of the...
Zygmunt Zahorski was born in 1914. In 1932 he began his studies at the Faculty of Mechanics, the Warsaw Polytechnic intending to study aeronautical engineering. Two years later he joined to the Faculty of Mathematics at Warsaw University for parallel study (in slow motion) where he included two full years and, in the same time, a part of the third year course at the Polytechnic. The mathematical studies...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.