В начале этого учебного года у разных своих старшеклассников провел занятия про параболы. Мне кажется, это интересно и есть много тем для обсуждения. Получился довольно длинный листочек... Думаю, запишу видео-разбор скоро
В начале этого учебного года у разных своих старшеклассников провел занятия про параболы. Мне кажется, это интересно и есть много тем для обсуждения. Получился довольно длинный листочек... Думаю, запишу видео-разбор скоро
Автор 13-ой задачи Ф. Нилов
BY Олимпиадная геометрия
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For tech stocks, “the main thing is yields,” Essaye said. After fleeing Russia, the brothers founded Telegram as a way to communicate outside the Kremlin's orbit. They now run it from Dubai, and Pavel Durov says it has more than 500 million monthly active users. Telegram does offer end-to-end encrypted communications through Secret Chats, but this is not the default setting. Standard conversations use the MTProto method, enabling server-client encryption but with them stored on the server for ease-of-access. This makes using Telegram across multiple devices simple, but also means that the regular Telegram chats you’re having with folks are not as secure as you may believe. Telegram boasts 500 million users, who share information individually and in groups in relative security. But Telegram's use as a one-way broadcast channel — which followers can join but not reply to — means content from inauthentic accounts can easily reach large, captive and eager audiences. In 2014, Pavel Durov fled the country after allies of the Kremlin took control of the social networking site most know just as VK. Russia's intelligence agency had asked Durov to turn over the data of anti-Kremlin protesters. Durov refused to do so.
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