Hello ,
I'm now starting with pgf/tikz and plotting functions.
I've tried to plot the tangent functions using this code:
\documentclass[10pt]{article}
\usepackage{pgf,tikz}
\pagestyle{empty}
\begin{document}
\begin{tikzpicture}[x=2cm,domain=0:4]
\clip (-1,-1.5) rectangle (5.5,4.5);
\draw[very thin,color=gray] (-0.1,-1.1) grid (3.9,3.9);
\draw[->] (-0.2,0) -- (4.2,0) node[right] {$x$};
\draw[->] (0,-1.2) -- (0,4.2) node[left] {$f(x)$};
\draw[color=blue] plot[samples=500] (\x,{tan(\x r)}) node[right] {$f(x)
= \tan x$};
\end{tikzpicture}
\end{document}
I compile with PDFLatex, It seems there is a problem with the tangent
functions.
(I've tried using gnuplot too, it works perfectly but I'd prefer to use
tikz)
Thanks in advance for your help
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