My question is to seek for the code to plot the graphs of the natural and decimal logarithms both in the same diagram using TikZ?

  • what is a repert? – percusse Mar 25 '17 at 17:40
  • I think repert is a faute d'orthographe for french : repère meaning axis in the sense of pgfplots – marsupilam Mar 25 '17 at 17:42
  • I meant cartisien plane " axis" – zeraoulia rafik Mar 25 '17 at 17:43
  • @marsupilam, thanks i have mixed between french and english – zeraoulia rafik Mar 25 '17 at 17:44
\begin{axis}[no marks,axis lines*=middle,samples=101]
\addplot {ln(x)};
\addplot {log10(x)};

enter image description here

  • could you show me how do i can writing under this plot , i don't meant caption ? – zeraoulia rafik Mar 26 '17 at 11:50

enter image description here

\begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1.0cm,y=1.0cm]
\draw[->,color=black] (-0.95,0.2) -- (5.4,0.2);
\foreach \x in {,1.,2.,3.,4.,5.}
\draw[shift={(\x,0)},color=black] (0pt,2pt) -- (0pt,-2pt) node[below] {$\x$};
\draw[->,color=black] (0.1,-2.93) -- (0.,2.02);
\foreach \y in {-2.,-1.,1.,2.}
\draw[shift={(0,\y)},color=black] (2pt,0pt) -- (-2pt,0pt) node[left] {$\y$};
\draw[color=black] (0pt,-10pt) node[right] {\footnotesize $0$};
\clip(-0.95,-2.93) rectangle (5.38,2.02);
\draw[line width=1.2pt,color=magenta,smooth,samples=100,domain=0.1:7] plot(\x,{ln((\x))});
\draw[line width=1.2pt,color=green,smooth,samples=100,domain=0.1:7] plot(\x,{log10((\x))});
\draw (2.38,1.64) node[anchor=north west] {$f(x)=\ln(x)$};
\draw (2.4,1) node[anchor=north west] {$g(x)=\log_{10}(x)$};
\draw[color=magenta] (0.16,-4.54) node {$f$};
\draw[color=green] (0.15,-4.54) node {$g$};

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.