Formula
Formula_20330
http://libmeta.ru/thesaurus/Formula_20330
Формулы
\[\frac{\partial^{2} u_{n}}{\partial x^{2}}+\frac{\partial^{2} u_{n}}{\partial y^{2}}+\frac{\partial^{2} u_{n}}{\partial z^{2}}=0\]
Входящие связи
← main formula · 1