\relax \@writefile{toc}{\contentsline {section}{\numberline {1}Das Integral \relax $ \intop \nolimits \mathop {\mathgroup \symoperators sin}\nolimits (x)\mathrm {d}x \relax \GenericError { }{LaTeX Error: Bad math environment delimiter}{See the LaTeX manual or LaTeX Companion for explanation.}{Your command was ignored.\MessageBreak Type I to replace it with another command,\MessageBreak or to continue without it.} }{1}}