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Diffstat (limited to 'buch/chapters/020-exponential/images/xexpx.tex')
| -rw-r--r-- | buch/chapters/020-exponential/images/xexpx.tex | 47 |
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diff --git a/buch/chapters/020-exponential/images/xexpx.tex b/buch/chapters/020-exponential/images/xexpx.tex new file mode 100644 index 0000000..80cd10d --- /dev/null +++ b/buch/chapters/020-exponential/images/xexpx.tex @@ -0,0 +1,47 @@ +% +% xexpx.tex -- template for standalon tikz images +% +% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule +% +\documentclass[tikz]{standalone} +\usepackage{amsmath} +\usepackage{times} +\usepackage{txfonts} +\usepackage{pgfplots} +\usepackage{csvsimple} +\usetikzlibrary{arrows,intersections,math} +\begin{document} +\def\skala{1.5} +\begin{tikzpicture}[>=latex,thick,scale=\skala] + +\draw[->] (-6.1,0) -- (2.0,0) coordinate[label={$x$}]; +\draw[->] (0,-1.1) -- (0,5.2) coordinate[label={right:$y$}]; + +\foreach \x in {-6,-5,-4,-3,-2,-1}{ + \draw (\x,{-0.1/\skala}) -- (\x,{0.1/\skala}); + \node at (\x,0) [above] {$\x$}; +} +\draw (1,{-0.1/\skala}) -- (1,{0.1/\skala}); +\node at (1,0) [below] {$1$}; +\foreach \y in {1,...,5}{ + \draw ({-0.1/\skala},\y) -- ({0.1/\skala},\y); + \node at (0,\y) [left] {$\y$}; +} + +\begin{scope} +\clip (-6,-0.5) rectangle (2,4.8); + +\draw[color=red,line width=1.4pt] + plot[domain=-1:2,samples=100] ({\x},{\x*exp(\x)}); +\draw[color=blue,line width=1.4pt] + plot[domain=-6:-1,samples=100] ({\x},{\x*exp(\x)}); + +\end{scope} + +\fill[color=violet] (-1,{-exp(-1)}) circle[radius=0.04]; +\node[color=violet] at (-1,{-exp(-1)}) [below] + {$\displaystyle f(-1) = -\frac{1}{e}$}; + +\end{tikzpicture} +\end{document} + |