Mein Code soll eine Funktion und eine Tangente darstellen, aber ich erhalte eine Fehlermeldung. Die Idee ist, dass die Darstellung einwandfrei funktioniert, wenn ich das Größenänderungsfeld mit seiner schließenden geschweiften Klammer entferne. Wenn ich es hinzufüge, erhalte ich diese Fehlermeldung:
Das Argument \pgfplots@addplotimpl@expression@curly hat ein zusätzliches }.
Ich habe schon vor Tagen versucht, das Problem zu erkennen, aber es ist mir nicht gelungen.
\documentclass[a4paper,12pt]{article}
\font\tenBbb=msbm10
\usepackage[lmargin=2 cm,rmargin=2
cm,tmargin=2cm,bmargin=2.5cm,
paper=a4paper]{geometry}
\usepackage{pgf,pgfplots,pgfarrows,pgfnodes,pgfautomata,pgfheaps,pgfshade}
\usepackage{pdfrender}
\usepackage[francais]{babel}
\usepackage{color}
\usepackage{pifont}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{amsmath,amsfonts,amssymb,mathrsfs}
\usepackage{graphicx}
\usepackage{caption}
\usepackage[T1]{fontenc}
\usepackage{fancyhdr}
\usepackage{enumerate}
%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{tikz,tkz-tab}
%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{lipsum}
\usepackage{tikz-3dplot}
\usepackage{tkz-euclide}
\usepackage{siunitx}
\usetikzlibrary{intersections, arrows, calc,through,backgrounds}
\usetikzlibrary{quotes,angles}
\usetikzlibrary{shapes}
%%%%%%%%%%%%%%%%%%%%%%%%%%
\usetikzlibrary{arrows.meta}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\begin{center}
\resizebox{12cm}{!}{
\begin{tikzpicture}
\begin{axis}[
xlabel={$x$},
ylabel={$y$},
xmin=-9.75, xmax=19.75,
ymin=-9.75, ymax=25,
domain=-6:15,
samples=100,
axis lines=middle,
xtick = {-8,-6,-4,...,14,16},
ytick = {-8,-6,-4,...,20,22},
grid=both,
grid style={dotted}
%width=10cm,
%height=8cm,
]
\addplot[ thick]{-2 + (x + 4)*exp(-x)};
\addplot[blue, thick]{-3*x+2};
\end{axis}
\end{tikzpicture} }
\end{center}
\end{document}