point d'inflexion d'une courbe
📅 April 22, 2024 | 👁️ Views: 22
\documentclass{standalone}
\standaloneconfig{margin=2mm}
\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\begin{document}
\begin{tikzpicture}[scale=1.5]
\begin{axis}[axis lines=center,
xlabel={$x$},
ylabel={$y$},
xtick=\empty,ytick=\empty,
xmin=-0.2,xmax=4.2,
ymin=-0.2,ymax=3,
unbounded coords=jump,
samples=200]
\draw[scale=1,domain=0.2:3.2,smooth,variable=\x,blue] plot ({\x},{cos(\x r)+1.5});
\filldraw[red] (pi/2,1.5) circle (1pt) node[above right] {point d'inflexion};
\draw[->] (pi/2,1.5) -- (pi/2+0.4,1);
\draw[->] (pi/2,1.5) -- (pi/2-0.4,2);
\end{axis}
\end{tikzpicture}
\end{document}
\documentclass{standalone}
\standaloneconfig{margin=2mm}
\usepackage{tikz}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\begin{document}
\begin{tikzpicture}[scale=1.5]
\begin{axis}[axis lines=center,
xlabel={$x$},
ylabel={$y$},
xtick=\empty,ytick=\empty,
xmin=-0.2,xmax=4.2,
ymin=-0.2,ymax=3,
unbounded coords=jump,
samples=200]
\draw[scale=1,domain=0.2:3.2,smooth,variable=\x,blue] plot ({\x},{cos(\x r)+1.5});
\filldraw[red] (pi/2,1.5) circle (1pt) node[above right] {point d'inflexion};
\draw[->gt;] (pi/2,1.5) -- (pi/2+0.4,1);
\draw[->gt;] (pi/2,1.5) -- (pi/2-0.4,2);
\end{axis}
\end{tikzpicture}
\end{document}
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