\relax \@writefile{toc}{\contentsline {subsection}{\tocsubsection {}{}{Limits.}}{1}} \@writefile{lof}{\contentsline {figure}{\numberline {3.1}{\ignorespaces $f(x)$ has the limit $L$ at $x=c$.\relax }}{1}} \providecommand*\caption@xref[2]{\@setref\relax\@undefined{#1}} \newlabel{fig:LimitGraph}{{3.1}{1}} \@writefile{lof}{\contentsline {figure}{\numberline {3.2}{\ignorespaces Only two One-sided approaches in $\ensuremath {\mathbb R}$.\relax }}{2}} \newlabel{fig:ApproachInR}{{3.2}{2}} \@writefile{toc}{\contentsline {subsection}{\tocsubsection {}{3.1}{Topology in $\ensuremath {\mathbb R}^n$.}}{2}} \@writefile{toc}{\contentsline {subsection}{\tocsubsection {}{3.2}{Techniques for studying limits.}}{3}} \@writefile{toc}{\contentsline {subsubsection}{\tocsubsubsection {}{3.2.1}{Directional approach.}}{3}} \@writefile{toc}{\contentsline {subsubsection}{\tocsubsubsection {}{3.2.2}{Polar coordinates.}}{4}} \@writefile{toc}{\contentsline {subsection}{\tocsubsection {}{3.3}{Continuity.}}{4}} \newlabel{tocindent-1}{0pt} \newlabel{tocindent0}{17.25pt} \newlabel{tocindent1}{0pt} \newlabel{tocindent2}{34.5pt} \newlabel{tocindent3}{40.80037pt}