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+\documentclass{article}
+\usepackage[utf8]{inputenc}
+\usepackage{tikz}
+\usepackage{pgfplots}
+\title{wykresy}
+\author{Grzegorz Adamski}
+\begin{document}
+ \begin{tikzpicture}
+\begin{axis}[
+axis x line = center ,
+axis y line = center ,
+xtick ={ -5 , -4 ,-3,-2,-1,0,1,2,3,4 ,5} ,
+ytick ={ -5 , -4 ,-3,-2,-1,0,1,2,3,4 ,5} ,
+xlabel ={$x$},
+ylabel ={$y$},
+xlabel style ={ below right },
+ylabel style ={ right },
+xmin = -5.5 ,
+xmax =5.5 ,
+ymin = -5.5 ,
+ymax =5.5 ,
+title ={ $x^2-2x+3$ }
+]
+\addplot[domain = -3:5]  plot(\x ,  \x*\x-2*\x+3);
+\end{axis}
+\end{tikzpicture}
+
+ \begin{tikzpicture}
+\begin{axis}[
+axis x line = center ,
+axis y line = center ,
+xtick ={ -5 , -4 ,-3,-2,-1,0,1,2,3,4 ,5} ,
+ytick ={ -5 , -4 ,-3,-2,-1,0,1,2,3,4 ,5} ,
+xlabel ={$x$},
+ylabel ={$y$},
+xlabel style ={ below right },
+ylabel style ={ right },
+xmin = -5.5 ,
+xmax =5.5 ,
+ymin = -5.5 ,
+ymax =5.5 ,
+title ={ $\cos(2x)$ }
+]
+\addplot[domain = -5:5,samples=500]  plot{cos(deg(2*x))};
+\end{axis}
+\end{tikzpicture}
+
+ \begin{tikzpicture}
+\begin{axis}[
+axis x line = center ,
+axis y line = center ,
+xtick ={ -5 , -4 ,-3,-2,-1,0,1,2,3,4 ,5} ,
+ytick ={ -5 , -4 ,-3,-2,-1,0,1,2,3,4 ,5} ,
+xlabel ={$x$},
+ylabel ={$y$},
+xlabel style ={ below right },
+ylabel style ={ right },
+xmin = -5.5 ,
+xmax =5.5 ,
+ymin = -5.5 ,
+ymax =5.5 ,
+title ={ $\sin(\frac{1}{x})$ }
+]
+\addplot[domain = -5:5,samples=500]  plot{sin(deg(1/x))};
+\end{axis}
+\end{tikzpicture}
+
+
+\begin{tikzpicture}[ scale =0.7]
+\begin {axis}[title ={ $x^2+y^2$ }]
+\addplot3[ surf , domain =-10:10 , samples =50]{ x*x+y*y )};
+\end {axis}
+\end {tikzpicture}
+
+\begin{tikzpicture}[scale =0.7]
+\begin{axis}[title ={ $x^2-y^2 + 2xy^2+1$ }]
+\addplot 3[surf,domain =-10:10, samples =50]{x*x-y*y + 2*x*y*y+1};
+\end{axis}
+\end{tikzpicture}
+ %\( x\mapsto \cos 2x\)
+ %\( x\mapsto\sin \tfrac{1}{x}\)
+ %\( (x,y)\mapsto x^2+y^2\)
+ %\((x,y)\mapsto x^2−y^2 + 2 x y ^2+1\) z wykorzystaniem omówionych
+ %  podczas prezentacji możliwości. Narysować wykres funkcji \(x\mapsto
+ %  x^2-1\) z wykorzystaniem stablicowanych danych.
+\end{document}