https://objectoriented.ru/ Sun, 25 Oct 2026 17:05:06 +0000 FeedCreator 1.8 https://objectoriented.ru/lib/tpl/bootstrap3/images/favicon.ico https://objectoriented.ru/ https://objectoriented.ru/playground:playground?rev=1787990377&do=diff PlayGround <latex> \frac{3}{4 \pi} \sqrt{4 \cdot x^2 12}\\ \lim_{n \to \infty} \sum_{k=1}^n \frac{1}{k^2} = \frac{\pi^2}{6}\\ \it{f}(x) = \frac{1}{\sqrt{x} x^2}\\ </latex> anonymous@undisclosed.example.com (Anonymous) playground Sat, 29 Aug 2026 07:59:37 +0000