Tukukkk

Hi everybody I'm trying to draw a graph from geogebra, but i don't know why, but there's an error. :(

Could you help me? thanks

documentclass[border=5mm]{standalone}

usepackage{pgf,tikz}

usetikzlibrary{arrows}

pagestyle{empty}

begin{document}

definecolor{ffqqqq}{rgb}{1.0,0.0,0.0}

definecolor{cqcqcq}{rgb}{0.7529411764705882,0.7529411764705882,0.7529411764705882}

begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1.0cm,y=1.0cm]

draw [color=cqcqcq,dash pattern=on 2pt off 2pt, xstep=1.0cm,ystep=1.0cm] (-5.0,-5.000000000000001) grid (13.60966,6.550825852439807);

draw[->,color=black] (-5.0,0.0) -- (13.60966,0.0);

foreach x in {-5.0,-4.0,-3.0,-2.0,-1.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0,13.0}

draw[shift={(x,0)},color=black] (0pt,2pt) -- (0pt,-2pt) node[below] {footnotesize $x$};

draw[->,color=black] (0.0,-5.000000000000001) -- (0.0,6.550825852439807);

foreach y in {-5.0,-4.0,-3.0,-2.0,-1.0,1.0,2.0,3.0,4.0,5.0,6.0}

draw[shift={(0,y)},color=black] (2pt,0pt) -- (-2pt,0pt) node[left] {footnotesize $y$};

draw[color=black] (0pt,-10pt) node[right] {footnotesize $0$};

clip(-5.0,-5.000000000000001) rectangle (13.60966,6.550825852439807);

draw[line width=2.8000000000000003pt,smooth,samples=100,domain=-5.0:13.60966] plot(x,{1.0/2.0*(x)^(3.0)-2.0*(x)});

draw (-4.498348295652174,4.244636869852858) node[anchor=north west] {$f(x) , = ,frac{1}{2} ; x^{3} - 2 ; x$};

draw[line width=2.8000000000000003pt,color=ffqqqq,smooth,samples=100,domain=-5.0:13.60966] plot(x,{1.0/((x)^(2.0)+1.0)});

draw [color=ffqqqq](3.6251728521739124,3.349994592125162) node[anchor=north west] {$g(x) , = ,frac{1}{x^{2} + 1}$};

begin{scriptsize}

draw[color=black] (-2.5402884173913045,-4.741547786434222) node {$f$};

draw[color=ffqqqq] (-4.870541495652174,-0.08940794225020257) node {$g$};

end{scriptsize}

end{tikzpicture}

end{document}

The culprit is

draw[line width=2.8000000000000003pt,smooth,samples=100,domain=-5.0:13.60966] plot(x,{1.0/2.0*(x)^(3.0)-2.0*(x)});

but the good news is that there is absolutely no need to use this large plot range.

documentclass[border=5mm]{standalone}

usepackage{pgf,tikz}

usetikzlibrary{arrows}

pagestyle{empty}

begin{document}

definecolor{ffqqqq}{rgb}{1.0,0.0,0.0}

definecolor{cqcqcq}{rgb}{0.7529411764705882,0.7529411764705882,0.7529411764705882}

begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1.0cm,y=1.0cm]

draw [color=cqcqcq,dash pattern=on 2pt off 2pt, xstep=1.0cm,ystep=1.0cm] (-5.0,-5.000000000000001) grid (13.60966,6.550825852439807);

draw[->,color=black] (-5.0,0.0) -- (13.60966,0.0);

foreach x in {-5.0,-4.0,-3.0,-2.0,-1.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0,13.0}

{draw[shift={(x,0)},color=black] (0pt,2pt) -- (0pt,-2pt) node[below]

{footnotesize $x$};}

draw[->,color=black] (0.0,-5.000000000000001) -- (0.0,6.550825852439807);

foreach y in {-5.0,-4.0,-3.0,-2.0,-1.0,1.0,2.0,3.0,4.0,5.0,6.0}

{draw[shift={(0,y)},color=black] (2pt,0pt) -- (-2pt,0pt) node[left]

{footnotesize $y$};}

draw[color=black] (0pt,-10pt) node[right] {footnotesize $0$};

clip(-5.0,-5.000000000000001) rectangle (13.60966,6.550825852439807);

draw[line width=2.8000000000000003pt,smooth,samples=100,domain=-4:4]

plot(x,{1.0/2.0*(x)^3-2*(x)}); %13.60966

draw (-4.498348295652174,4.244636869852858) node[anchor=north west] {$f(x) , = ,frac{1}{2} ; x^{3} - 2 ; x$};

draw[line width=2.8000000000000003pt,color=ffqqqq,smooth,samples=100,domain=-5.0:13.60966] plot(x,{1.0/((x)^(2.0)+1.0)});

draw [color=ffqqqq](3.6251728521739124,3.349994592125162) node[anchor=north west] {$g(x) , = ,frac{1}{x^{2} + 1}$};

draw[color=black] (-2.5402884173913045,-4.741547786434222)

node[font=scriptsize] {$f$};

draw[color=ffqqqq] (-4.870541495652174,-0.08940794225020257) node[font=scriptsize] {$g$};

end{tikzpicture}

end{document}

I would also like to mention that you pursue a strategy which is IMHO somewhat peculiar. You employ some software, GEOCobra, which produces a code that you seem to not 100% understand. And then you seek help on an online forum. Don't get me wrong, there is by itself nothing really wrong with that. However, I personally would not like to be at the mercy of such software which, if I understand you correctly, produces an output that leads to errors. BTW, the code is really far from pretty or elegant. If I was you, I would consider abandoning GEOCobra and switch to pgfplots, where such plots can be produced with ease, and you will be safe from the dimension too large error you got here.