06 2012 档案

摘要：那天的题目两个解是否一致 // 圆柱形区域的定解问题： 两个解 { 以下仅供参考用COMSOL仿真得到的图像( 设L=1 ) }$$ \begin{cases} \Delta _{ 3 }u=0 \\ \left \frac { \partial u }{ \partial z } \right| _{ z=0 }= \left \frac { ... 阅读全文

摘要：Piecewise-defined Functionshttp://www.sagemath.org/doc/reference/sage/functions/piecewise.html 阅读全文

摘要：如果大家在编写Sage worksheet时需要辅以公式展示Daum Equation Editor 一个非常有帮助的工具，在chrome 浏览器的应用软件商店里可以找到。看起来非常棒解除了无聊的手册查询和不直观的编辑方法。图片中下部是tex代码\widehat { f } [\lambda ]=\int _{ -\infty }^{ +\infty } f(x)e^{ -i\lambda x... 阅读全文

摘要：Rome was not built in a day.没有什么能轻易弄就齐心努力，定能成就 阅读全文

摘要：DOC版How to use the Sage NotebookAworksheetis an ordered list of Sage calculations with output.Asessionis a worksheet anda set of variables in some state.TheSage notebookis a collection of worksheets, saved objects, and user information.Find Help and DocumentationGet Started with SageWork through the 阅读全文