We will determine the domain and rage of each graph as follows:
We use the lines in which we see that there are not clear limits to determine the domain and range.
23.
[tex]\begin{cases}D_f=\mleft\lbrace x\colon x\ne2\mright\rbrace \\ \\ R_f=\mleft\lbrace y\colon y\ne1\mright\rbrace\end{cases}[/tex]
25.
[tex]\begin{cases}D_f=\mleft\lbrace x\colon x\ne0\mright\rbrace \\ \\ R_f=\mleft\lbrace-\infty27.[tex]\begin{cases}D_f=\mleft\lbrace x\colon x\ne\pm2\mright\rbrace \\ \\ R_f=\mleft\lbrace y\colon y\le0\land y>1\mright\rbrace\end{cases}[/tex]
