physics / midyear.auxon commit [methods] piecewise funciton definition on CAS (aa95ebe)
   1\relax 
   2\@writefile{toc}{\contentsline {section}{\numberline {1}Motion}{}}
   3\@writefile{toc}{\contentsline {section}{\numberline {2}Relativity}{}}
   4\@writefile{toc}{\contentsline {section}{\numberline {3}Fields and power}{}}