Matlab符号计算的bug

根据Matlab网站的bug报告，链接如下：


http://www.mathworks.com/support/bugreports/523801

内容摘要：

Summary

On Windows, the command syms x hangs MATLAB or takes
minutes to finish.

Description

The MuPAD kernel can take several minutes or longer to
initialize on Windows. Any command from the Symbolic Math Toolbox
that requires starting MuPAD might seem to hang.

Workaround

The attached zip file contains the instructions and libraries
needed to change R2008b or R2009a to create an in-process MuPAD
kernel for symbolic computations. Download the file and extract it
to begin the installation.

Fix

This bug was fixed as of R2009b.

看来bug存在于2008b和2009a之中，解决方法：下载链接中的附件并使用，或者使用2009b……推荐后者，可以在64位系统下使用符号工具箱，一般来说，原生的64位程序的效率值得期待。

………………………………自从取消了某个开发网站的订阅之后清静了很多………………………………